We sync gift cards created in Gift Up! as discount coupons in your Shopify account. These discount coupons act as a gift card in that they can be used multiple times until the balance has reached zero and have the added benefit in that they can be redeemed online via your Shopify store and in-person via your Shopify POS terminal.
But first, you'll need to authorize Gift Up! to access your Shopify account data.