My son has a Sonos system that uses the Sonos 2 App. I have a Sonos 1 system. The two systems are registered on the same network. My Sonos s1 app constantly wants me to upgrade to the s2 app and blocks me from using my s1 system. I know its is because the s1 app discovers my sons speakers/soundbars and wants me to change. Problem is, I don't want to change and the app doesn't allow me to use my s1 system. What to do? Do I really have to establish two networks to sepate the two Sonos systems such that my S1 app does not discover the other system?