With my C520WS the video streaming service (for the app) is crashing independently of everything else. It still records continuously to my NAS without interruption and settings are still available for the camera via the app, but no video streaming service. I have to reboot the camera through the app to restore the video stream. Troubleshooting applied so far has been:

*Factory reset

*Clean setup

*Daily scheduled 3am automatic reboot 

*Tried lowering video stream to both 1080P and 720P 
*Confirmed cloud control still works 

Despite all the above the app video stream dies.