Hi ​@El Davros, welcome to the Sonos Community!

I’m sorry to hear that you’re having issues seeing your Sonos system.

Since your devices are showing on your network and you can AirPlay, what happens if you try with a different device or using the Sonos Web App, can you see your system then? If the speakers are online but you can’t connect, then it could mean that they’re on a different subnet or SSID, though that should also effect AirPlay. Do you have any extenders or additional networking equipment? If you do, make sure they meet our system requirements or try powering them off temporarily to test.

I’d also recommend rebooting your iPhone by powering it off for one to two minutes to see if that helps. If this doesn’t help, and the above doesn’t either, then I’d recommend contacting our support team for further troubleshooting.

Thanks!

I deleted the app again and rebooted iPhone and reinstalled the app. After this, the Sonos app could see the system. 
 

Thanks again for the reply. 
 

D