Will Clow ID change after upgrading my account?

It will not change

But it can be modified. After we enter the setting interface, click the entrance direction indicated by the arrow; after entering the interface, find the logout button; when we enter the password , select SMS verification as the only option.

Enter the mobile phone account you used to log in, and fill in the verification code you received. Click the game account in the third item from other login methods,

you can modify the ID account.