This information can be easily adapted in the Siemens ID Service Portal https://sp.login.siemens.com/
Personal data is confidential and must be managed by you, the user.
If you check your profile on Support Center you will see your personal information and a couple of "Need to change ..." links:
These links will redirect you to the Siemens ID Service Portal where you can easily maintain and change this information.
Alternatively, you can get to the page directly using this address: https://sp.login.siemens.com/
Log in using your SiemensID credentials (this is your email address and your password).
This brings your directly to the page where you can change your user profile:
If you prefer you can change to the dark theme:
Change Name::
Change Password:
Change Email:
Change Organization:
If you prefer, you can also set up Multi-Factor-Authentication. In this case you will be asked to log out and re-login: