SeleID HelpYour account email helps you sign in and recover access. Your username is the public handle people use to find you. Changing one does not automatically change the other, and neither is the same as your permanent SeleID number.
Change the email you control
Open Account Recovery if the current app provides the change-email section. Check the existing address, then enter the new inbox you own. Submit the request and follow every confirmation shown or sent to your addresses. Until completion is confirmed, do not assume the new email can sign you in.
Keep a safe transition
Retain access to the old inbox while the change is pending. Do not make repeated requests with different addresses because delivery is slow. If a message fails or the screen shows an error, use in-app support and describe the step without attaching confirmation codes.
Update your public username
Use the username option reached through your SeleID account settings. Check availability, spelling and any waiting period shown. A username change updates the public handle and can affect links other people have saved. Read profile setup before confirming.
What stays separate
Your permanent SeleID number is not a field you can replace with a preferred handle. A new username does not create another person or restart your account. Do not assume every app has refreshed immediately; check the saved result in the current app. Review account security after any unexpected change.