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@troisdsmax
normally that error means the Facebook account have been banned, sometime it’s not, if you have a modified version of the game, don’t look further, you have been banned and both of your savegames are banned, you will have to start over and become legit user if you want to keep your birds.
If your account were never played on a modified version of the game, try to delete the Facebook app on the phone. and try to login from the web browser when asked in the game.
If that works just download back Facebook apps.
But most of the time this Facebook error means your Facebook savage has been banned for cheating.