What device is your app on?

Usually, it isn’t the app that needs to be restarted, but an issue between the controller device and the speakers talking to each other. Could be that the controller device isn’t on the same subnet, or that the speakers aren’t connecting to WiFi, or any of a bunch of other connection issues. It’s really hard to tell from the data presented.

It also depends on your device type such as iOS vs Android. For iOS you stop the app from running by swiping up on it when showing as below

It seems like sonos is down i cant even get online with the computer. No sonos store either

What does Sonos have to do with your computer not being able to get on-line. That’s your network. Where are you located?