Ever since I joined the service and started using the modem, the admin password seems to get reset about a minute or two after connecting it to the WAN connection.
I reset it to factory defaults with the WAN connection disconnected. I can then connect using the default admin and cisco user passwords. I then change these both to another password and connect the router WAN connection.
A few minutes later, the modem makes a click sound and I can't connect with the admin login anymore. The cisco user password is still the one I changed it to.
Does anyone know why and how this is happening? I have also disabled remote management.