I can only use the app when at home or even anywhere else, as long as I'm not at the McDonald's or their parking lot! Once I reach there and need the app, I can't get in to see any deals or get any redemptions. It's a great tease! This is at every McDonald's I've been to since I installed the app 3+ years ago! Their employees tell me to turn off wifi bc that'll interfere with the app, which I've done to no avail. Oh well.