RBS350 won't reset

Netgear will talk to you if you purchase a support contract.

The web administration password gets changed as part of the original configuration, which happened over a year ago.  That Password Recovery process asks for answers to some Security Questions which were also supposed to be set up over a year ago during the initial configuration, but from posts on the forum it is pretty clear that many customers did not perform this step. (Either the prompt was vague or they somehow skipped that step.)

The only way to get into the web administration is to do a Factory Reset on the RBR350 router, which will return the web password to "password".

One way to know if the configuration process was completed is to verify that the WiFi login credentials no longer match what is printed on the label on the bottom of the router.  It is really common for customers to set the WiFi  to match their previous router so that they do not have to reconfigure every WiFi device in the house. (I have kept the same WiFi credentials for over 20 years.)

The web interface has a clear option on the Attached Devices page to Delete a satellite which is not connected properly and then the Add Orbi Satellite menu can be used to attempt to add it again.