Bug - Normal Error Code -1 preventing log-in

[Ghost20]

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)

 

[Ownface]

@Ghost20 Can you try turning on airplane mode, starting the app, turning off airplane mode, and then try to log in via Facebook again? If that doesn't do the trick, can you send me a private message with your Facebook account name/link? Thanks!