I have a Sonos Arc and 2 Sonos Ones as Surrounds connected to my living Room TV, I  also have a Sonos Beam 2 connected to my bedroom TV, the app has removed all these speakers connected to TVs. They still work with the TVs they're connected to but I can't see them in the app anymore. I've tried to add them back but the app can't see them. How do I fix this?