Hi everyone,
Ive been playing on an iPad with iOS 10.3.1( or whatever the one before the most recent is) and since updating to version 1.2.1 I can no longer log-in via Facebook like I previously had, instead it gets to Syncing Game Data before providing me with error code -1 and stopping me from logging in.
(https://m.imgur.com/kgHLFWk)