It's now months that I have this issue with Farm Heroes Saga - and only with Farm Heroes, others like Candy Crush are working fine.
Everytime I try to sync, the Facebook window will pop up, I enter my e-mail and password and will get the information that Farm Heroes is already authorized. I am redirected to the app but still not connected.
This means that every time I gain a new animal it will be deleted by the time I open the app anew.
Please give me advice, I already checked Facebook without success.