Go ahead and log into your Facebook account. Toggle to the right of the screen and select the menu button. Scroll down and select “Account Settings” from the drop-down menu. Scroll down to “Apps” and click it. Now select “Logged in with Facebook” as the first option. Go to the bottom of the page and select “Coin Master.” Now, scroll down to the bottom of the page and click “Remove App.” Then, log out of Facebook and back in using the account you want to use to play. Finally, log into Facebook and restart Coin Master on your device.