If you're looking to recover your account via Facebook, please make sure you have previously connected your account to Facebook and that your device is attached to your Facebook profile.
 
If you're unsure how to do that, please visit the Connect via Facebook FAQ.
 
If your account is already connected through Facebook, please follow these steps:
  • Tap on the Cog to enter your Settings menu (landing page or in game)
  • Tap on the blue Facebook Connect button b
  • Confirm your progress and tap Load Game
  • The screen will refresh and you'll be back in your game!