Bump version to 0.4.0

- Add CHANGELOG entry for self-licensing prevention feature
- Update plugin header and constant to 0.4.0

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -7,6 +7,57 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.4.0] - 2026-01-24
+
+### Added
+
+- Self-licensing prevention: Plugin automatically bypasses license validation when the configured license server URL points to the same WordPress installation
+- New `isSelfLicensing()` method in `PluginLicenseChecker` to detect circular licensing scenarios
+- New `normalizeDomain()` helper method for domain comparison (strips www prefix, lowercases)
+
+### Changed
+
+- `isLicenseValid()` and `validateLicense()` now check for self-licensing before attempting validation
+- Cache clearing now also clears the self-licensing check cache
+
+### Technical Details
+
+- Self-licensing detection compares normalized domains of license server URL and current site URL
+- Prevents circular dependency where plugin would try to validate against itself
+- Plugins can only be validated against the original store from which they were obtained
+
+## [0.3.9] - 2026-01-24
+
+### Added
+
+- "Generate Licenses" button in order meta box for admin-created orders
+- "Generate Missing Licenses" button when some products in an order are missing licenses
+- AJAX handler `ajaxGenerateOrderLicenses()` for manual license generation from admin
+- Warning message when order domain is not set before generating licenses
+
+### Fixed
+
+- **Critical:** Licenses are now generated for orders created manually in admin area
+- Previously, licenses were only generated via checkout hooks, leaving admin-created orders without licenses
+
+### Technical Details
+
+- Added `wclp_generate_order_licenses` AJAX action to `OrderLicenseController`
+- Updated `order-licenses.js` with generate button handler and page reload on success
+- Added CSS styles for generate status messages
+- Updated translations (365 strings)
+
+## [0.3.8] - 2026-01-24
+
+### Fixed
+
+- Fixed duplicate German translation string causing `ArgumentCountError` in settings page
+- The notification settings description had duplicated text with two `%s` placeholders
+
+### Changed
+
+- Updated `magdev/wc-licensed-product-client` to latest version (64d215c)
+
 ## [0.3.7] - 2026-01-24
 
 ### Added

CLAUDE.md

@@ -36,18 +36,9 @@ This project is proudly **"vibe-coded"** using Claude.AI - the entire codebase w
 
 No known bugs at the moment.
 
-### Version 0.3.7
-
-- Fixed: Dashboard widget "View All Licenses" link used wrong page slug
-- Fixed: Download links in customer account resulted in 404 errors (missing query var registration)
-- Removed: Redundant "Status Breakdown" section from dashboard widget (info already in stat cards)
-- Changed: License Types section now uses card style matching the stats row above
-- Added: Download counter for licensed product versions (tracked per version)
-- Added: Download Statistics admin dashboard widget showing total downloads, top products, and top versions
-
 ### Version 0.4.0
 
-No changes at the moment.
+- Self-licensing prevention: Plugin automatically bypasses license validation when the configured license server URL points to the same WordPress installation (prevents circular dependency)
 
 ## Technical Stack
 
@@ -1037,3 +1028,134 @@ define('WC_LICENSE_TRUSTED_PROXIES', '10.0.0.1,192.168.1.0/24');
 - Created release package: `releases/wc-licensed-product-0.3.6.zip` (818 KB)
 - SHA256: `b0063f0312759f090e12faba83de730baf4114139d763e46fad2b781d4b38270`
 - Tagged as `v0.3.6` and pushed to `main` branch
+
+### 2026-01-24 - Version 0.3.7 - Dashboard Improvements & Download Counter
+
+**Overview:**
+
+Fixed dashboard widget bugs, improved UI consistency, and added download tracking functionality with a new statistics widget.
+
+**Bug Fixes:**
+
+- Fixed: Dashboard widget "View All Licenses" link used wrong page slug (`wc-licensed-product-licenses` instead of `wc-licenses`)
+- Fixed: Download links in customer account resulted in 404 errors due to missing query var registration
+- Added `license-download` endpoint registration during plugin activation in `Installer::activate()`
+- Added `addDownloadQueryVar()` method to `DownloadController` for proper WordPress endpoint recognition
+
+**UI Improvements:**
+
+- Removed redundant "Status Breakdown" section from license statistics widget (info already shown in stat cards above)
+- Changed License Types section to use card-style layout matching the stats row above
+- Cleaned up unused CSS for status badges
+
+**New Features:**
+
+- Download counter for licensed product versions (tracked per version in database)
+- New Download Statistics admin dashboard widget showing:
+  - Total downloads count
+  - Top 5 products by downloads
+  - Top 5 versions by downloads
+
+**New files:**
+
+- `src/Admin/DownloadWidgetController.php` - Dashboard widget for download statistics
+
+**New methods in VersionManager:**
+
+- `incrementDownloadCount()` - Atomically increment download count for a version
+- `getTotalDownloadCount()` - Get total downloads across all versions
+- `getDownloadStatistics()` - Get download stats grouped by product and version
+
+**Modified files:**
+
+- `src/Installer.php` - Added `download_count` column to versions table, added `license-download` endpoint registration
+- `src/Product/ProductVersion.php` - Added `downloadCount` property and `getDownloadCount()` method
+- `src/Product/VersionManager.php` - Added download counting methods
+- `src/Frontend/DownloadController.php` - Added query var registration, increment download count on file serve
+- `src/Admin/DashboardWidgetController.php` - Fixed URL, removed Status Breakdown, changed License Types to cards
+- `src/Plugin.php` - Added DownloadWidgetController instantiation
+
+**Technical notes:**
+
+- Download count is incremented atomically using SQL `download_count = download_count + 1`
+- Statistics queries use SQL aggregation with product name enrichment via `wc_get_product()`
+- WordPress endpoints require both `add_rewrite_endpoint()` AND `query_vars` filter registration
+- Existing installations need to flush rewrite rules (Settings > Permalinks > Save) or reactivate plugin
+
+**Release v0.3.7:**
+
+- Created release package: `releases/wc-licensed-product-0.3.7.zip` (827 KB)
+- SHA256: `e93b2ab06f6d43c2179167090e07eda5db6809df6e391baece4ceba321cf33f6`
+- Tagged as `v0.3.7` and pushed to `main` branch
+
+### 2026-01-24 - Version 0.3.8 - Translation Bug Fix
+
+**Overview:**
+
+Fixed a critical translation bug that caused the settings page to crash with an `ArgumentCountError`.
+
+**Bug Fix:**
+
+- Fixed: Duplicate German translation string in `wc-licensed-product-de_CH.po` causing `ArgumentCountError` in settings page
+- Root cause: The notification settings description was duplicated in the translation, resulting in two `%s` placeholders when only one argument was passed to `sprintf()`
+- Location: [wc-licensed-product-de_CH.po:322-328](languages/wc-licensed-product-de_CH.po#L322-L328)
+
+**Modified files:**
+
+- `languages/wc-licensed-product-de_CH.po` - Removed duplicated translation string
+- `languages/wc-licensed-product-de_CH.mo` - Recompiled binary translation
+
+**Technical notes:**
+
+- Error was logged to `tmp/fatal-errors-2026-01-24.log`
+- The German `msgstr` contained the same text twice, each with a `%s` placeholder
+- `sprintf()` at `SettingsController.php:221` only provided one argument for the single `%s` in the English source
+- Translation strings with `%s` placeholders must have exactly matching placeholder counts between source and translation
+
+**Dependency Updates:**
+
+- Updated `magdev/wc-licensed-product-client` from `9f513a8` to `64d215c`
+
+**Release v0.3.8:**
+
+- Created release package: `releases/wc-licensed-product-0.3.8.zip` (829 KB)
+- SHA256: `50ad6966c5ab8db2257572084d2d8a820448df62615678e1576696f2c0cb383d`
+- Tagged as `v0.3.8` and pushed to `main` branch
+
+### 2026-01-24 - Version 0.3.9 - Admin Order License Generation Fix
+
+**Overview:**
+
+Fixed a critical bug where licenses were not generated for orders created manually in the WordPress admin area.
+
+**Bug Fix:**
+
+- **Critical:** Licenses are now generated for orders created manually in admin area
+- Previously, licenses were only generated via checkout hooks (`woocommerce_order_status_completed`, `woocommerce_order_status_processing`, `woocommerce_payment_complete`)
+- Admin-created orders bypassed checkout, so the `_licensed_product_domain` meta was never set and licenses were never generated
+
+**Implemented:**
+
+- "Generate Licenses" button in order meta box for admin-created orders
+- "Generate Missing Licenses" button when some products in an order already have licenses
+- Warning message when order domain is not set before generating licenses
+- AJAX handler `ajaxGenerateOrderLicenses()` for manual license generation
+
+**Modified files:**
+
+- `src/Admin/OrderLicenseController.php` - Added Generate button, AJAX handler, CSS styles
+- `assets/js/order-licenses.js` - Added `generateLicenses()` function with page reload on success
+
+**Technical notes:**
+
+- Button only appears when order is paid and domain is set
+- Uses existing `LicenseManager::generateLicense()` which handles duplicate prevention
+- Page reloads after successful generation to show new licenses in table
+- Tracks generated vs skipped licenses for accurate feedback messages
+- Updated translations (365 strings)
+
+**Release v0.3.9:**
+
+- Created release package: `releases/wc-licensed-product-0.3.9.zip` (851 KB)
+- SHA256: `fdb65200c368da380df0cabb3c6ac6419d5b4731cd528f630f9b432a3ba5c586`
+- Tagged as `v0.3.9` and pushed to `main` branch

assets/js/order-licenses.js

@@ -16,6 +16,9 @@
             // Order domain save
             $('#wclp-save-order-domain').on('click', this.saveOrderDomain.bind(this));
 
+            // Generate licenses button
+            $(document).on('click', '#wclp-generate-licenses', this.generateLicenses.bind(this));
+
             // License domain edit/save/cancel
             $(document).on('click', '.wclp-edit-domain-btn', this.startEditDomain);
             $(document).on('click', '.wclp-save-domain-btn', this.saveLicenseDomain.bind(this));
@@ -135,6 +138,54 @@
             $editBtn.show();
         },
 
+        /**
+         * Generate licenses for order
+         */
+        generateLicenses: function(e) {
+            e.preventDefault();
+
+            var $btn = $(e.currentTarget);
+            var $spinner = $btn.siblings('.spinner');
+            var $status = $btn.siblings('.wclp-generate-status');
+
+            var orderId = $btn.data('order-id');
+
+            $btn.prop('disabled', true);
+            $spinner.addClass('is-active');
+            $status.text('').removeClass('success error');
+
+            $.ajax({
+                url: wclpOrderLicenses.ajaxUrl,
+                type: 'POST',
+                data: {
+                    action: 'wclp_generate_order_licenses',
+                    nonce: wclpOrderLicenses.nonce,
+                    order_id: orderId
+                },
+                success: function(response) {
+                    if (response.success) {
+                        $status.text(response.data.message).addClass('success');
+                        if (response.data.reload) {
+                            // Reload the page after a short delay to show the new licenses
+                            setTimeout(function() {
+                                window.location.reload();
+                            }, 1500);
+                        }
+                    } else {
+                        $status.text(response.data.message || wclpOrderLicenses.strings.error).addClass('error');
+                        $btn.prop('disabled', false);
+                    }
+                },
+                error: function() {
+                    $status.text(wclpOrderLicenses.strings.error).addClass('error');
+                    $btn.prop('disabled', false);
+                },
+                complete: function() {
+                    $spinner.removeClass('is-active');
+                }
+            });
+        },
+
         /**
          * Save license domain
          */

composer.lock

@@ -12,7 +12,7 @@
             "source": {
                 "type": "git",
                 "url": "https://src.bundespruefstelle.ch/magdev/wc-licensed-product-client.git",
-                "reference": "9f513a819e8218a0e8e16f0be8f7edbf0f30245e"
+                "reference": "64d215cb265a64ff318cfbb954dd128b0076dc1d"
             },
             "require": {
                 "php": "^8.3",
@@ -52,7 +52,7 @@
                 "issues": "https://src.bundespruefstelle.ch/magdev/wc-licensed-product-client/issues",
                 "source": "https://src.bundespruefstelle.ch/magdev/wc-licensed-product-client"
             },
-            "time": "2026-01-23T15:45:59+00:00"
+            "time": "2026-01-24T13:32:11+00:00"
         },
         {
             "name": "psr/cache",
@@ -894,16 +894,16 @@
         },
         {
             "name": "twig/twig",
-            "version": "v3.22.2",
+            "version": "v3.23.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/twigphp/Twig.git",
-                "reference": "946ddeafa3c9f4ce279d1f34051af041db0e16f2"
+                "reference": "a64dc5d2cc7d6cafb9347f6cd802d0d06d0351c9"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/twigphp/Twig/zipball/946ddeafa3c9f4ce279d1f34051af041db0e16f2",
-                "reference": "946ddeafa3c9f4ce279d1f34051af041db0e16f2",
+                "url": "https://api.github.com/repos/twigphp/Twig/zipball/a64dc5d2cc7d6cafb9347f6cd802d0d06d0351c9",
+                "reference": "a64dc5d2cc7d6cafb9347f6cd802d0d06d0351c9",
                 "shasum": ""
             },
             "require": {
@@ -957,7 +957,7 @@
             ],
             "support": {
                 "issues": "https://github.com/twigphp/Twig/issues",
-                "source": "https://github.com/twigphp/Twig/tree/v3.22.2"
+                "source": "https://github.com/twigphp/Twig/tree/v3.23.0"
             },
             "funding": [
                 {
@@ -969,7 +969,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2025-12-14T11:28:47+00:00"
+            "time": "2026-01-23T21:00:41+00:00"
         }
     ],
     "packages-dev": [],

releases/wc-licensed-product-0.3.7.zip.sha256

@@ -0,0 +1 @@
+e93b2ab06f6d43c2179167090e07eda5db6809df6e391baece4ceba321cf33f6  wc-licensed-product-0.3.7.zip

releases/wc-licensed-product-0.3.9.zip.sha256

@@ -0,0 +1 @@
+fdb65200c368da380df0cabb3c6ac6419d5b4731cd528f630f9b432a3ba5c586  releases/wc-licensed-product-0.3.9.zip

src/Admin/OrderLicenseController.php

@@ -36,6 +36,7 @@ final class OrderLicenseController
         // Handle AJAX actions
         add_action('wp_ajax_wclp_update_order_domain', [$this, 'ajaxUpdateOrderDomain']);
         add_action('wp_ajax_wclp_update_license_domain', [$this, 'ajaxUpdateLicenseDomain']);
+        add_action('wp_ajax_wclp_generate_order_licenses', [$this, 'ajaxGenerateOrderLicenses']);
 
         // Enqueue admin scripts
         add_action('admin_enqueue_scripts', [$this, 'enqueueScripts']);
@@ -126,6 +127,18 @@ final class OrderLicenseController
 
             <h4><?php esc_html_e('Licenses', 'wc-licensed-product'); ?></h4>
 
+            <?php
+            // Count licensed products to check if all have licenses
+            $licensedProductCount = 0;
+            foreach ($order->get_items() as $item) {
+                $product = $item->get_product();
+                if ($product && $product->is_type('licensed')) {
+                    $licensedProductCount++;
+                }
+            }
+            $missingLicenses = $licensedProductCount - count($licenses);
+            ?>
+
             <?php if (empty($licenses)): ?>
                 <p class="description">
                     <?php esc_html_e('No licenses have been generated for this order yet.', 'wc-licensed-product'); ?>
@@ -137,6 +150,20 @@ final class OrderLicenseController
                         <em><?php esc_html_e('Licenses will be generated when the order is marked as paid/completed.', 'wc-licensed-product'); ?></em>
                     <?php endif; ?>
                 </p>
+                <?php if ($orderDomain && $order->is_paid()): ?>
+                    <p style="margin-top: 10px;">
+                        <button type="button" class="button button-primary" id="wclp-generate-licenses" data-order-id="<?php echo esc_attr($order->get_id()); ?>">
+                            <?php esc_html_e('Generate Licenses', 'wc-licensed-product'); ?>
+                        </button>
+                        <span class="spinner" style="float: none; margin-top: 4px;"></span>
+                        <span class="wclp-generate-status"></span>
+                    </p>
+                <?php elseif (!$orderDomain): ?>
+                    <p class="description" style="margin-top: 10px; color: #d63638;">
+                        <span class="dashicons dashicons-warning"></span>
+                        <?php esc_html_e('Please set the order domain above before generating licenses.', 'wc-licensed-product'); ?>
+                    </p>
+                <?php endif; ?>
             <?php else: ?>
                 <table class="widefat striped wclp-licenses-table">
                     <thead>
@@ -223,6 +250,29 @@ final class OrderLicenseController
                     );
                     ?>
                 </p>
+
+                <?php if ($missingLicenses > 0 && $orderDomain && $order->is_paid()): ?>
+                    <p style="margin-top: 10px;">
+                        <span class="dashicons dashicons-warning" style="color: #dba617;"></span>
+                        <?php
+                        printf(
+                            /* translators: %d: Number of missing licenses */
+                            esc_html(_n(
+                                '%d licensed product is missing a license.',
+                                '%d licensed products are missing licenses.',
+                                $missingLicenses,
+                                'wc-licensed-product'
+                            )),
+                            $missingLicenses
+                        );
+                        ?>
+                        <button type="button" class="button" id="wclp-generate-licenses" data-order-id="<?php echo esc_attr($order->get_id()); ?>">
+                            <?php esc_html_e('Generate Missing Licenses', 'wc-licensed-product'); ?>
+                        </button>
+                        <span class="spinner" style="float: none; margin-top: 4px;"></span>
+                        <span class="wclp-generate-status"></span>
+                    </p>
+                <?php endif; ?>
             <?php endif; ?>
         </div>
 
@@ -248,6 +298,9 @@ final class OrderLicenseController
             .wclp-lifetime { color: #0073aa; font-weight: 500; }
             .wclp-edit-domain-btn { color: #0073aa; text-decoration: none; }
             .wclp-edit-domain-btn .dashicons { font-size: 16px; width: 16px; height: 16px; }
+            .wclp-generate-status { font-style: italic; margin-left: 8px; }
+            .wclp-generate-status.success { color: #46b450; }
+            .wclp-generate-status.error { color: #dc3232; }
         </style>
         <?php
     }
@@ -284,8 +337,9 @@ final class OrderLicenseController
             'strings' => [
                 'saving' => __('Saving...', 'wc-licensed-product'),
                 'saved' => __('Saved!', 'wc-licensed-product'),
-                'error' => __('Error saving. Please try again.', 'wc-licensed-product'),
+                'error' => __('Error. Please try again.', 'wc-licensed-product'),
                 'invalidDomain' => __('Please enter a valid domain.', 'wc-licensed-product'),
+                'generating' => __('Generating...', 'wc-licensed-product'),
             ],
         ]);
     }
@@ -392,4 +446,96 @@ final class OrderLicenseController
         $pattern = '/^([a-zA-Z0-9]([a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])?\.)+[a-zA-Z]{2,}$/';
         return (bool) preg_match($pattern, $domain);
     }
+
+    /**
+     * AJAX handler for generating order licenses
+     */
+    public function ajaxGenerateOrderLicenses(): void
+    {
+        check_ajax_referer('wclp_order_license_actions', 'nonce');
+
+        if (!current_user_can('manage_woocommerce')) {
+            wp_send_json_error(['message' => __('Permission denied.', 'wc-licensed-product')]);
+        }
+
+        $orderId = absint($_POST['order_id'] ?? 0);
+
+        if (!$orderId) {
+            wp_send_json_error(['message' => __('Invalid order ID.', 'wc-licensed-product')]);
+        }
+
+        $order = wc_get_order($orderId);
+        if (!$order) {
+            wp_send_json_error(['message' => __('Order not found.', 'wc-licensed-product')]);
+        }
+
+        // Check if order is paid
+        if (!$order->is_paid()) {
+            wp_send_json_error(['message' => __('Order must be paid before licenses can be generated.', 'wc-licensed-product')]);
+        }
+
+        // Get domain
+        $domain = $order->get_meta('_licensed_product_domain');
+        if (empty($domain)) {
+            wp_send_json_error(['message' => __('Please set the order domain before generating licenses.', 'wc-licensed-product')]);
+        }
+
+        // Generate licenses for each licensed product
+        $generated = 0;
+        $skipped = 0;
+
+        foreach ($order->get_items() as $item) {
+            $product = $item->get_product();
+            if ($product && $product->is_type('licensed')) {
+                $license = $this->licenseManager->generateLicense(
+                    $orderId,
+                    $product->get_id(),
+                    $order->get_customer_id(),
+                    $domain
+                );
+
+                if ($license) {
+                    // Check if this is a new license or existing
+                    $existingLicenses = $this->licenseManager->getLicensesByOrder($orderId);
+                    $isNew = true;
+                    foreach ($existingLicenses as $existing) {
+                        if ($existing->getProductId() === $product->get_id() && $existing->getId() !== $license->getId()) {
+                            $isNew = false;
+                            break;
+                        }
+                    }
+                    if ($isNew) {
+                        $generated++;
+                    } else {
+                        $skipped++;
+                    }
+                }
+            }
+        }
+
+        if ($generated > 0) {
+            wp_send_json_success([
+                'message' => sprintf(
+                    /* translators: %d: Number of licenses generated */
+                    _n(
+                        '%d license generated successfully.',
+                        '%d licenses generated successfully.',
+                        $generated,
+                        'wc-licensed-product'
+                    ),
+                    $generated
+                ),
+                'generated' => $generated,
+                'skipped' => $skipped,
+                'reload' => true,
+            ]);
+        } else {
+            wp_send_json_success([
+                'message' => __('All licenses already exist for this order.', 'wc-licensed-product'),
+                'generated' => 0,
+                'skipped' => $skipped,
+                'reload' => false,
+            ]);
+        }
+    }
 }

src/License/PluginLicenseChecker.php

@@ -52,6 +52,11 @@ final class PluginLicenseChecker
      */
     private ?bool $isLocalhostCached = null;
 
+    /**
+     * Cached self-licensing check result
+     */
+    private ?bool $isSelfLicensingCached = null;
+
     /**
      * Get singleton instance
      */
@@ -84,6 +89,11 @@ final class PluginLicenseChecker
             return true;
         }
 
+        // Always valid when self-licensing (server URL points to this installation)
+        if ($this->isSelfLicensing()) {
+            return true;
+        }
+
         // Check cache first
         $cached = get_transient(self::CACHE_KEY);
         if ($cached !== false) {
@@ -107,6 +117,11 @@ final class PluginLicenseChecker
             return true;
         }
 
+        // Always valid when self-licensing (server URL points to this installation)
+        if ($this->isSelfLicensing()) {
+            return true;
+        }
+
         // Check settings are configured
         $serverUrl = $this->getLicenseServerUrl();
         $licenseKey = $this->getLicenseKey();
@@ -176,6 +191,7 @@ final class PluginLicenseChecker
         delete_transient(self::CACHE_KEY);
         delete_transient(self::ERROR_CACHE_KEY);
         $this->isLocalhostCached = null;
+        $this->isSelfLicensingCached = null;
     }
 
     /**
@@ -215,6 +231,60 @@ final class PluginLicenseChecker
         return false;
     }
 
+    /**
+     * Check if self-licensing (license server URL points to this installation)
+     *
+     * Prevents circular dependency where plugin tries to validate against itself.
+     * Plugins can only be validated against the original store from which they were obtained.
+     */
+    public function isSelfLicensing(): bool
+    {
+        if ($this->isSelfLicensingCached !== null) {
+            return $this->isSelfLicensingCached;
+        }
+
+        $serverUrl = $this->getLicenseServerUrl();
+
+        // No server URL configured - not self-licensing
+        if (empty($serverUrl)) {
+            $this->isSelfLicensingCached = false;
+            return false;
+        }
+
+        // Parse both URLs to compare domains
+        $serverParsed = parse_url($serverUrl);
+        $siteUrl = get_site_url();
+        $siteParsed = parse_url($siteUrl);
+
+        // Get normalized domains (lowercase, no www prefix)
+        $serverDomain = $this->normalizeDomain($serverParsed['host'] ?? '');
+        $siteDomain = $this->normalizeDomain($siteParsed['host'] ?? '');
+
+        // If domains match, this is self-licensing
+        if ($serverDomain === $siteDomain) {
+            $this->isSelfLicensingCached = true;
+            return true;
+        }
+
+        $this->isSelfLicensingCached = false;
+        return false;
+    }
+
+    /**
+     * Normalize a domain for comparison (lowercase, strip www)
+     */
+    private function normalizeDomain(string $domain): string
+    {
+        $domain = strtolower(trim($domain));
+
+        // Strip www. prefix
+        if (str_starts_with($domain, 'www.')) {
+            $domain = substr($domain, 4);
+        }
+
+        return $domain;
+    }
+
     /**
      * Get the current domain from the site URL
      */

wc-licensed-product.php

@@ -3,7 +3,7 @@
  * Plugin Name: WooCommerce Licensed Product
  * Plugin URI: https://src.bundespruefstelle.ch/magdev/wc-licensed-product
  * Description: WooCommerce plugin to sell software products using license keys with domain-based validation.
- * Version: 0.3.7
+ * Version: 0.4.0
  * Author: Marco Graetsch
  * Author URI: https://src.bundespruefstelle.ch/magdev
  * License: GPL-2.0-or-later
@@ -28,7 +28,7 @@ if (!defined('ABSPATH')) {
 }
 
 // Plugin constants
-define('WC_LICENSED_PRODUCT_VERSION', '0.3.7');
+define('WC_LICENSED_PRODUCT_VERSION', '0.4.0');
 define('WC_LICENSED_PRODUCT_PLUGIN_FILE', __FILE__);
 define('WC_LICENSED_PRODUCT_PLUGIN_DIR', plugin_dir_path(__FILE__));
 define('WC_LICENSED_PRODUCT_PLUGIN_URL', plugin_dir_url(__FILE__));