Let me know if you find a solution. I have called tech support, posted in these forums for months and there is no solution forthcoming. My system is essentially bricked. App won’t run on desktop (Win 7 not supported), Ipad (too old to support minimum iOS) or matching Motorola G7 phones belonging to my wife and I. Hugely unhappy with Sonos especially after the S1 > S2 debacle a couple of  years ago. They had a great thing if they just left it alone. I regret starting down the Sonos road and am pleased to report that to anybody I talk to about audio. Friends don’t let friends buy Sonos.

@Bellabels , there just isn’t enough information provided to begin to offer anything but the most vpbasic suggestions. 

Typically, if the Sonos app doesn’t rimpn, the OS you’re attempting to run it on doesn’t  match up with the supported OS for controllers FAQ.

If the controller runs, but doesn’t connect with your speakers, you may not be on the WiFi, or you may have a mesh network that breaks things up into separate subnets, and your controller is on one, and your Sonos is on another. 

But that’s pretty cursory information. If you can, a whole bunch more information would help this community help you. Or, you could easily call Sonos Support directly to discuss it.

When you speak directly to the phone folks, they have tools at their disposal that will allow them to give you advice specific to your network and Sonos system.