Are you just sharing, or asking for help? 
 

A bit more information about your system, any error messages, what you’ve done to try to fix things would be helpful if you do want help. 

I am asking for help. It seems like my Sonos app is not connecting to the speakers. When I look at the app it behaves like it is playing, but no sound out of the speakers. It has been working , but this morning no sound.

No error message 

A power cycle of router and speakers may be worth a try?

What else have you tried?

What can you tell us about your network, and your router? By any chance, is it a mesh network? Are you certain your unspecified device that has the controller in it is connected to the LAN/Wifi? How is your Sonos device connected, is it via a WiFi connection, or is it wired? Which version of the Sonos controller are you running, S1 or S2? Which Sonos speakers do you have?

Thank you for your help. The system is working again. :-)