Doesnt work

I tried using a code to buy 2 breakfast sandwiches for $4. When it got scanned, the register said it was already scanned. The cashier couldnt override it because she said they had no control over phone promotions! Really?! Its was frustrating when you have two hungry kids. App is not worth the trouble if the restaurants cant trouble shoot.

Scrappy Girl Shoppe about McDonald's, v5.3.0