Connection between my network player and my control app is unreliable/unstable
Make sure that the device you are running the app on has a reliable internet connection
Check if there are software updates outstanding for both the app and the device itself
If your internet connection is stable, is it affecting all your devices that you can run the app on? If one device is connecting and another is not, it would be best to check if there are software updates outstanding for both the app and the device itself.
Restart first the streamer and then, if this has no effect, the router itself