I frequently have to uninstall / reinstall this app because it seems to think that it's the past and the food that went through my body / down the toilet a week ago is still the food I'm purchasing now in the present time. Even after deleting all of the ghost food from my cart, I still can't use another "deal" offer because McDonald's believes in an infinite loop of McNuggets within the space-time continuum. One meal forever and ever...