I don't know how likely it it that this will work for anyone else, but when the app started locking me out of my game I just waited (hoping it would be fixed and I could play again). In the end, I was autoresigned-BUT, when I then went back on the app, I could actually get into the game, and was able to play again. As I say, this may not work for others, and of course if you leave it 48 hours it is possible you'll be eliminated, and you're fairly unlikely to win. But if you don't like having an imperfect record of finishing games (like me) then it may be an option. I hope they fix it properly soon though.