Hi @bing4,
Thanks for reaching out.
Presently, we do not have the provision to check the balance of a gift card coupon using a different code. On applying the gift card code on the cart/checkout page the redeemable amount will be shown on the cart summary section.
The guest users are able to apply the gift card by entering the code and the proper email address in the WooCommerce email address field.
Additionally, the premium version provides the provision to let registered users add their gift card balances to their accounts. This balance can be viewed from the My Account> My Store credits page. As it’s not advisable to discuss the premium features in this forum, we request that you reach out to our support team through this?link?for more information.?Our team will be happy to help you and provide any assistance you may need.