I tried to redeem a gift card balance for Wingstop using the StoCard app. I know for sure the money is there but when I gave the cashier my phone to scan she didn't know what to do. First she scanned the barcode as a coupon then I informed her that it was a gift card and she tells me she needed the card to swipe. I'm going to try again. Anybody have any insight or potential solutions? The lemon pepper is calling me!