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The game adopts an automatic login method, So if your device is logged in to another Facebook, the game will connect with it. Log in with your facebook Id on Facebook App, which you used for this game.
Do this step below,
Open game > Log out > Close game > Open facebook app > log out > Remove user accounts > Restart device > Open facebook app > Log in ( which you used for this game) > Open game > Click ''played before'' / ''save progress''/ Connect with facebook.
If you still have the same problem then Let me know.