i have same issue by log in using facebook..and its not solve yet the problem..anyone already fix the issue
Install facebook apps my friend, login the Facebook account that bind with your ROM account. Enter game, sign in with facebook, and hopefully it'll sign in. Why this happen? Probably Facebook ain't having any of those app signed in with third party link anymore. Instead you need to physically have Facebook installed just to sign in the game. I specifically installed Fb just sign in on multiple of my games lol. Sorry for rambling, and hopefully this help you, if not.. Sorry got nothing other than this method which is the only one I know of.