When you open the game, you can tap on the ""Sign in with Google"" button and follow these steps:
You will be redirected to a website to log in with your Google account or create a new Google account.
After you have signed in successfully, your Knight is connected to your Google account.
Important! If you tap the ""New game"" button when you open the game instead, you will need to link your new progress to a different Google account.
After you log out, you will be able to go back to the first Google account and recover your original progress.