There are different Family Island game reset procedures for the connected and not connected game.
If you want to reset your Family Island game profile and restart the game from scratch, then check out following procedures.
How to reset Family Island game?
To reset and play the Family Island game from beginning, first check that – is the game connected to Facebook / Apple sign in / Game Center previously.
You can check if the game is connected or not from the Settings > My Accounts window.
Game not connected and saved before:
If your game is not connected and saved before, then just uninstall and reinstall the game.
Here, you can clear game cache and game data from app settings (if normal reinstall does not work).
Game connected and saved before:
In this case, tap on the Facebook / Apple sign in / Game Center button and in the new window select the “Local” button. This action will start your game from the first level.
Note: in this case the game will lose all your account progress and progress will not be restored again.
Hope you find the given Family Island profile reset guide helpful.