1. Make sure you have a stable internet connection.
  2. Check to see if your username and password are correct.
  3. If you have the Facebook app installed on your device, log out of it (or delete and reinstall it).
  4. Log out of your Facebook account in all browsers installed on your device (Chrome, Opera, Safari, etc.).
  5. Restart your device and try to connect the game to Facebook again.

If none of the above worked, try the following:
1. Go to your device’s Settings -> Facebook.
2. Make sure the game is listed under Allow these apps to use your account and that permission is turned on.
3. Delete your Facebook account from the device settings (tap your name -> Delete Account).
4. Reset your advertising identifier (Settings -> Privacy -> Advertising -> Reset Advertising Identifier).
5. Uninstall the Facebook app from your device.
6. Open your browser -> open your Facebook account page -> log into your account.
7. Try to reconnect to Facebook in the game settings.

Please be aware that access to Facebook programs and services can be restricted in certain countries or regions. In such cases, we comply with local laws and regulations.