the app forces you to connect to the McDonald's wifi so while pulling up your rewards or deals in the drive thru it just loads and loads because the wifi never works properly. Then you have to turn wifi off on your phone and then close and restart the app and by that time you feel rude making the person taking your order and the people behind you wait. it's an easy fix; ask if the person wants to connect to wifi but I'm sure it's a lucrative way to get and sell more of your data so they won't.