Sounds like the app is having trouble ‘seeing’ the speaker. Yes, it might help if you were to temporarily wire the speaker to your router with an Ethernet cable. You could probably just reboot the speakers as well as the router, and ‘fix’ it that way, but it depends really on what issue is keeping the controller from seeing the speakers. 

Are you using the same router as you used at your previous place?

Try unplugging the speaker from power for a couple of minutes and reboot your router and phone.

Hi

When you say “After a Move” do you mean you moved to a new location (dwelling)? If so did you”

1. Change to a different ISP?
2. Use the same router and change the WiFi password?
3. Setup a new router?
4. Setup and entirely different network (i.e. Mesh and/or add extenders)?
5. Any combination of the above?

Edit: Looks like we all responded at the same time. LOL

this is currently what I’m dealing with. 🤯 no device found. I’ve moved home and had a new router fitted. I’ve reset and unplugged but we can hear it working but would like to use the app to rest the room.. ect.. 

thank you 

Hi 

Click the link to learn how to setup your Sonos with a new router.

https://support.sonos.com/s/article/1061?language=en_US

It’s all working thank you all xx much appreciated xx