YITH WooCommerce Gift Cards Premium 4.10.0

New: added 'D' placeholder in gift card code pattern, it will replaced by a digit in place of a random letter.
Fix: missing amount conversion with Aelia Currency Switcher and WooCommerce 3.
Fix: prevent a Javascript error when WooCommerce trigger 'found_variation' and the variation object is not set.
Fix: avoid a fatal error when activating the plugin on website with PHP prior than

• Fix 'choose design' button does nothing when clicked, showing the modal window when clicked again.
• Fix 'choose design' not visible when using the 'gift this product' feature.
• Tweak improved layout for preset design modal window.

• Update: plugin language file.
• Tweak: improved the gift card layout.
• Fix: 'Add gift' text not localizable.
• Fix: billing_first_name property called directly in WooCommerce 3.