- Stop HA (Services → homeassistant.stop or ssh in and run
hassio homeassistant stop)
- Rename or delete the .storage folder (can be done via CIFS/SMB)
- Clean your browser cache and close it, also delete some cookies you have from HA. (not necessary)
- Start HA (ssh in and
hassio homeassistant start), you’ll get the Login to create an user account
- Login with that user