Here's how you can remove your game from being connected to Facebook:
- Open Facebook.
- Tap on the Menu button (3 horizontal lines at the top right of the screen).
- Tap on Settings & Privacy > Settings.
- Under Security, tap on Apps and Websites.
- Tap Edit on Logged in with Facebook.
- Look for Spell Forest under Active > tap Edit.
- Scroll down to the button and tap on Remove.
- Facebook will then provide a final confirmation to remove the App. Tap Remove to confirm.
Note: Please remember that choosing to remove the game from its Facebook Connection could totally delete your progress (unless you have connected that same progress using an Email address).