Using multiple gift cards

I have a wordpress website which used WooCommerce and the YITH Gift Cards plugin (free version). On the checkout page, when a user applies a coupon (Gift Card), the remaining balance is correctly reduced by the value of the gift card. There are two issues however: When the user attempts to add a second gift card, the first one seems to be removed. How can I allow users to apply multiple gift cards to an order on the checkout? Once a user has applied a gift card, it’s value is reduced even if the order is not placed. If you remove the gift card or abandon the purchase, the original value of the gift card should be restored. How can I ensure that the value of the gift card is only reduced when the order is placed? An observation is that although I only have the free version of this plugin, there is no additional place to enter the gift card, so I am using the standard WooCommerce ‘Apply Coupon’ box. I am unsure if this is correct but I cannot find any way to make a special Gift Card box appear. Other details: PHP version: 7.4.33 WordPress version: 6.9 YITH Gift Cards Version: 4.29.0 I have tried everything to get this to work, so any help would be greatly appreciated. Many thanks!!