App is non-functional. It won't accept my order until I'm in their parking lot. Then, when I get to their parking lot the app progress bar keeps spinning and I can't place the order. I sometimes wind up getting frustrated and leave to go eat somewhere else. Sometimes it generates an error code with a message to show to the cashier. Other times the app will freeze the order partially through the process and the unfinished order reappears a week later. The app needs serious improvement.