SeleID HelpAct from a phone or computer you trust. Your priority is protecting access to the missing device and your SeleID, while keeping a way to recover your own account. Do not pay someone who promises to unlock it for you.
Protect the phone itself
Use your device's own lost-phone and screen-lock options where available. If your email or phone service may be accessible to someone else, secure those accounts through their official controls. App logout is not a substitute for locking a missing handset.
Return to your existing account
Follow account recovery if you cannot remember the password. Use your confirmed account email. If an authenticator was on the missing phone, follow the additional verification or recovery option actually offered. Do not create another account simply because a familiar device is unavailable.
End other access
After signing in on a trusted device, review Session Management. Use Logout other phones or the broader logout control if appropriate, and wait for confirmation. Keep your current recovery method ready before ending every session.
Check protections and activity
Change a password that may be exposed. Review Connected Apps and any supported passkey controls. Check your profile and recent actions for changes you did not make. A registered-alert-device list is not a complete access history.
Ask for help safely
Use in-app support for unresolved access. Share the error and account handle, not private credentials.