Just an update, the company called to ask for the login issue, however, still can't login my account, no one from the app team emailed me or sent any coupons as they promised. Great news for fast food companies, if you constantly log out your customers, we would never bother to go again. i have to constantly to login with my email, while kept logging me out. So i never go once for the whole January. Thanks to those genius working for Macdonald, we don't need to go anymore coz your app sucks.