diff --git a/CHANGELOG.md b/CHANGELOG.md
index 00157ae..7701221 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.5.14] - 2026-01-27
+
+### Fixed
+
+- **CRITICAL:** Fixed Product Versions meta box not appearing for licensed-variable products
+- Product Versions meta box now always added to product pages, visibility controlled via CSS/JavaScript
+- Added `Installer::registerProductTypes()` to create product type terms in the `product_type` taxonomy
+- Product type terms are now ensured to exist on `woocommerce_init` hook for existing installations
+- Fixed License Settings tab and Product Versions visibility toggling when changing product types
+
 ## [0.5.13] - 2026-01-27
 
 ### Fixed
diff --git a/assets/css/admin.css b/assets/css/admin.css
index d002011..4a615b1 100644
--- a/assets/css/admin.css
+++ b/assets/css/admin.css
@@ -51,11 +51,18 @@ code.file-hash {
 }
 
 /* License Product Tab - Hidden by default, shown via JS based on product type */
-#woocommerce-product-data .show_if_licensed,
-#woocommerce-product-data .show_if_licensed-variable {
+#woocommerce-product-data ul.wc-tabs li.show_if_licensed,
+#woocommerce-product-data ul.wc-tabs li.show_if_licensed-variable {
     display: none;
 }
 
+/* When shown, restore proper display for tab list items */
+#woocommerce-product-data ul.wc-tabs li.show_if_licensed.wclp-active,
+#woocommerce-product-data ul.wc-tabs li.show_if_licensed-variable.wclp-active {
+    display: block;
+}
+
+/* Hide elements for non-licensed products */
 #woocommerce-product-data .hide_if_licensed {
     display: none !important;
 }
diff --git a/src/Admin/VersionAdminController.php b/src/Admin/VersionAdminController.php
index a559d0e..269d2da 100644
--- a/src/Admin/VersionAdminController.php
+++ b/src/Admin/VersionAdminController.php
@@ -43,25 +43,21 @@ final class VersionAdminController
 
     /**
      * Add versions meta box to product edit page
+     * Always adds the meta box - visibility is controlled via CSS/JavaScript based on product type
      */
     public function addVersionsMetaBox(): void
     {
         global $post;
 
-        // Only add meta box for licensed products or new products
         if ($post && $post->post_type === 'product') {
-            $product = wc_get_product($post->ID);
-            // Show for licensed products or new products (where type might be selected later)
-            if (!$product || $product->is_type('licensed') || $post->post_status === 'auto-draft') {
-                add_meta_box(
-                    'wc_licensed_product_versions',
-                    __('Product Versions', 'wc-licensed-product'),
-                    [$this, 'renderVersionsMetaBox'],
-                    'product',
-                    'normal',
-                    'high'
-                );
-            }
+            add_meta_box(
+                'wc_licensed_product_versions',
+                __('Product Versions', 'wc-licensed-product'),
+                [$this, 'renderVersionsMetaBox'],
+                'product',
+                'normal',
+                'high'
+            );
         }
     }
 
@@ -280,12 +276,13 @@ final class VersionAdminController
         }
 
         // Verify product exists and is of type licensed
-        $product = wc_get_product($productId);
-        if (!$product) {
+        // Use WC_Product_Factory::get_product_type() for reliable type detection
+        $productType = \WC_Product_Factory::get_product_type($productId);
+        if (!$productType) {
             wp_send_json_error(['message' => __('Product not found.', 'wc-licensed-product')]);
         }
 
-        if (!$product->is_type('licensed')) {
+        if (!in_array($productType, ['licensed', 'licensed-variable'], true)) {
             wp_send_json_error(['message' => __('This product is not a licensed product.', 'wc-licensed-product')]);
         }
 
diff --git a/src/Installer.php b/src/Installer.php
index 8f861b0..354a236 100644
--- a/src/Installer.php
+++ b/src/Installer.php
@@ -31,6 +31,7 @@ final class Installer
     {
         self::createTables();
         self::createCacheDir();
+        self::registerProductTypes();
 
         // Set version in options
         update_option('wc_licensed_product_version', WC_LICENSED_PRODUCT_VERSION);
@@ -43,6 +44,28 @@ final class Installer
         flush_rewrite_rules();
     }
 
+    /**
+     * Register custom product type terms in the product_type taxonomy
+     * This is required for WC_Product_Factory::get_product_type() to work correctly
+     */
+    public static function registerProductTypes(): void
+    {
+        // Ensure WooCommerce taxonomies are registered
+        if (!taxonomy_exists('product_type')) {
+            return;
+        }
+
+        // Register 'licensed' product type term if it doesn't exist
+        if (!term_exists('licensed', 'product_type')) {
+            wp_insert_term('licensed', 'product_type');
+        }
+
+        // Register 'licensed-variable' product type term if it doesn't exist
+        if (!term_exists('licensed-variable', 'product_type')) {
+            wp_insert_term('licensed-variable', 'product_type');
+        }
+    }
+
     /**
      * Run on plugin deactivation
      */
diff --git a/src/Product/LicensedProductType.php b/src/Product/LicensedProductType.php
index 57e6665..c0de937 100644
--- a/src/Product/LicensedProductType.php
+++ b/src/Product/LicensedProductType.php
@@ -30,6 +30,9 @@ final class LicensedProductType
      */
     private function registerHooks(): void
     {
+        // Ensure product type terms exist in taxonomy (for WC_Product_Factory::get_product_type())
+        add_action('woocommerce_init', [$this, 'ensureProductTypeTermsExist']);
+
         // Register product types
         add_filter('product_type_selector', [$this, 'addProductType']);
         add_filter('woocommerce_product_class', [$this, 'getProductClass'], 10, 4);
@@ -74,6 +77,15 @@ final class LicensedProductType
         add_action('admin_footer', [$this, 'addVariableProductScripts']);
     }
 
+    /**
+     * Ensure product type terms exist in the product_type taxonomy
+     * This is required for WC_Product_Factory::get_product_type() to work correctly
+     */
+    public function ensureProductTypeTermsExist(): void
+    {
+        \Jeremias\WcLicensedProduct\Installer::registerProductTypes();
+    }
+
     /**
      * Add product types to selector
      */
@@ -227,35 +239,6 @@ final class LicensedProductType
                 ?>
             </div>
         </div>
-        <script type="text/javascript">
-            jQuery(document).ready(function($) {
-                // Show/hide panels based on product type for license settings tab
-                function toggleLicensedProductOptions() {
-                    var productType = $('#product-type').val();
-                    var isLicensed = productType === 'licensed';
-                    var isLicensedVariable = productType === 'licensed-variable';
-
-                    if (isLicensed || isLicensedVariable) {
-                        // Show license settings tab
-                        $('.show_if_licensed').show();
-                        $('.show_if_licensed-variable').show();
-                        $('.general_options').show();
-                        $('.pricing').show();
-                        $('.general_tab').show();
-                    } else {
-                        // Hide license settings tab for other product types
-                        $('.show_if_licensed').hide();
-                        $('.show_if_licensed-variable').hide();
-                    }
-                }
-
-                // Initial state on page load
-                toggleLicensedProductOptions();
-
-                // On product type change
-                $('#product-type').on('change', toggleLicensedProductOptions);
-            });
-        </script>
         <?php
     }
 
@@ -642,7 +625,8 @@ final class LicensedProductType
     }
 
     /**
-     * Add JavaScript for licensed-variable product type in admin
+     * Add JavaScript for licensed product types in admin
+     * Handles visibility of License Settings tab and Product Versions meta box
      */
     public function addVariableProductScripts(): void
     {
@@ -659,21 +643,39 @@ final class LicensedProductType
         ?>
         <script type="text/javascript">
             jQuery(document).ready(function($) {
-                // Show/hide panels based on product type
-                function toggleLicensedVariableOptions() {
+                // Main function to handle all licensed product type visibility
+                function toggleLicensedProductVisibility() {
                     var productType = $('#product-type').val();
+                    var isLicensed = productType === 'licensed';
+                    var isLicensedVariable = productType === 'licensed-variable';
 
-                    if (productType === 'licensed-variable') {
+                    // Handle License Settings tab visibility using class toggle (not show/hide)
+                    // This preserves proper CSS display values for tab list items
+                    if (isLicensed || isLicensedVariable) {
+                        $('.show_if_licensed').addClass('wclp-active');
+                        $('.show_if_licensed-variable').addClass('wclp-active');
+                        $('.general_options').show();
+                        $('.pricing').show();
+                        $('.general_tab').show();
+                    } else {
+                        $('.show_if_licensed').removeClass('wclp-active');
+                        $('.show_if_licensed-variable').removeClass('wclp-active');
+                    }
+
+                    // Handle Product Versions meta box visibility
+                    if (isLicensed || isLicensedVariable) {
+                        $('#wc_licensed_product_versions').show();
+                    } else {
+                        $('#wc_licensed_product_versions').hide();
+                    }
+
+                    // Handle licensed-variable specific options
+                    if (isLicensedVariable) {
                         // Show variable product options
                         $('.show_if_variable').show();
                         $('.hide_if_variable').hide();
 
-                        // Show licensed product options
-                        $('.show_if_licensed-variable').show();
-                        $('.show_if_licensed').show();
-
-                        // Show general and variations tabs
-                        $('.general_tab').show();
+                        // Show variations tab
                         $('.variations_tab').show();
                         $('.variations_options').show();
 
@@ -685,34 +687,33 @@ final class LicensedProductType
                     }
                 }
 
-                // Initial check
-                toggleLicensedVariableOptions();
+                // Initial check on page load
+                toggleLicensedProductVisibility();
 
                 // On product type change
                 $('#product-type').on('change', function() {
                     // Use setTimeout to let WooCommerce finish its own processing first
-                    setTimeout(toggleLicensedVariableOptions, 100);
+                    setTimeout(toggleLicensedProductVisibility, 100);
                 });
 
                 // Re-apply after WooCommerce AJAX operations that may reset visibility
-                $(document).on('woocommerce_variations_loaded', toggleLicensedVariableOptions);
-                $(document).on('woocommerce_variations_added', toggleLicensedVariableOptions);
-                $(document).on('woocommerce_variations_saved', toggleLicensedVariableOptions);
+                $(document).on('woocommerce_variations_loaded', toggleLicensedProductVisibility);
+                $(document).on('woocommerce_variations_added', toggleLicensedProductVisibility);
+                $(document).on('woocommerce_variations_saved', toggleLicensedProductVisibility);
 
                 // Handle AJAX complete events for attribute saving
                 $(document).ajaxComplete(function(event, xhr, settings) {
-                    // Check if this was a product data save or attribute action
                     if (settings.data && (
                         settings.data.indexOf('action=woocommerce_save_attributes') !== -1 ||
                         settings.data.indexOf('action=woocommerce_load_variations') !== -1 ||
                         settings.data.indexOf('action=woocommerce_add_variation') !== -1
                     )) {
-                        setTimeout(toggleLicensedVariableOptions, 100);
+                        setTimeout(toggleLicensedProductVisibility, 100);
                     }
                 });
 
-                // Also listen for the WooCommerce product type show/hide trigger
-                $('body').on('woocommerce-product-type-change', toggleLicensedVariableOptions);
+                // Listen for WooCommerce product type show/hide trigger
+                $('body').on('woocommerce-product-type-change', toggleLicensedProductVisibility);
             });
         </script>
         <?php
diff --git a/wc-licensed-product.php b/wc-licensed-product.php
index f0d0ae2..cbe9143 100644
--- a/wc-licensed-product.php
+++ b/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: 0.5.13
+ * Version: 0.5.14
  * 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', '0.5.13');
+define('WC_LICENSED_PRODUCT_VERSION', '0.5.14');
 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__));