Hello, my friend.
To restore an ONT to factory defaults, press and hold the reset button, log in to the ONT web page or CLI, or use the NMS to restore the ONT to factory defaults. For details about how to restore an ONT to factory defaults, collect ONT logs.
Generally, even if the factory settings are restored, the default password is used. The default password is not used in OPEN mode.
If possible, provide the collected ONT logs.
Thank you!