*******************************THIS WORKED FOR ME*********************************************
I'm on iphone 6, and after being locked out since I updated, this actually worked.
I uninstalled and waited about 1.5-2 hours. Installed and was able to get in.
This worked for Modern War as well.
Thank you psyconaz. Good workaround. Your post should be pinned somewhere.
I'll copy and paste this and make a new thread.