If you are using iOS 13 on your Apple device and you are over the age of 13, you will be able to connect your current account to Apple Sign-in.
In order to do so, you will need to open your in-game Settings Menu by tapping on the mail icon on the left side of your in-game screen, then select the Settings tab.
Once you open up the Settings Menu, you can find the option ''Link to Apple''. Simply tap on it and your account should then link to Apple Sign-In.
Note that this will only apply if your Apple Sign In Credentials are not already linked
In order to do so, you will need to open your in-game Settings Menu by tapping on the mail icon on the left side of your in-game screen, then select the Settings tab.
Once you open up the Settings Menu, you can find the option ''Link to Apple''. Simply tap on it and your account should then link to Apple Sign-In.
Note that this will only apply if your Apple Sign In Credentials are not already linked