It it is made by using domain of university .This cant be changed

However you may try this:

University Account (e.g., student portal or LMS):

Log in to your account on the university portal or system.

Navigate to the profile or account settings section.

Look for the option to edit or change your primary email address.

Enter your new email address and confirm it.

You may be required to verify the new email by clicking a link sent to it.

Save changes.

If the system doesn’t allow you to update it directly, contact your university's IT or student services department for assistance.

Fiona Ellwood yes I know many services are hard to get from RG,(none profit org) but check under scroll meny on your profile - Settings

Be use google search or AI, make easy