Options vary whether you use the Facebook application or not on your device. If you are using the Facebook app on your device;

• Open Royal Match and log out from your Facebook account.
• You can do this by tapping on the Settings button on the upper right corner of your screen and, from there, tapping on "Save your progress", where you can detach your Facebook account.
• Open the Facebook app, sign out from your current account, and log in with the new one.
• Open Royal Match and log in with your Facebook account.

If you are not using the Facebook app on your device;

• Open Royal Match and sign out from your Facebook account.
• Tap the "Connect with Facebook" button and sign in with your new account on the browser page.