I have accounts on 2 iPad Airs and 1 iPhone 5 all with iOS 8.1.2. More and more often now when I try to log in or wake up MW 5.0.1 I get the promo screens but when I finally get to my site in the game it is dim and nothing I tap works. I've waited past the screen time out but eventually have to close the MW app and reboot it. Sometimes twice. Has anyone else experienced this?