If you are using an Android device, you can connect or disconnect your Google Play Account in the game settings.
You can do this in 3 easy steps:
1. Tap the gear icon on the game's Home screen to access the Settings screen.
2. There, you will find a blue "Save Your Progress" button.
3. Touch the blue button, and then you will find a black "Sign in With Google" button.
This will connect your Google Play Account to your game progress.