A.
If one-time password authentication fails during Expo ID identity verification settings, or if the QR code is read but the settings are not completed, the "ExpoID:*****" setting will remain in the one-time password authentication app on your smartphone.
It is safe to delete the "ExpoID:*****" that fails to authenticate when logging in.
It is safe to delete the "ExpoID:*****" that fails to authenticate when logging in.