Hi. Cameras going on and off ..... I have seen this issue a few weeks ago .... guy bought 8 x 4K cameras and the onyx Yale 4K nvr
problem was the nvr will only run 2 of 4K cameras rest had to be 720p or 1. 4K camera and the other 7 1080p
China P2P app ..... will also give you alert problems ...... you may find it’s the app
i would get your money back for the nvr and get something better. Cameras will run on another nvr
which onyx nvr do you have ?