App worked fine, then I was forced to update today. Won't even open now. Incredible. Prior problem fixed. I still can't use "B1G1 for .50" brkfst sandwich on a mobile order for Egg Cheese Biscuit, which is the only a McD's biscuit I want because I prefer no meat. The stores all say it's the app's fault; Mobile App team never responded to email. I just quit going to Mcd's.