I recently had to change my NVR because apparently the one that worked flawlessly took a lightning strike.
I went from a ZP-NC18-S to a ZP-NC28-S, because that is all that I could find. Everything seems to be the same menu-wise and operationally.
MeShare on my Android LG-G4 works flawlessly; However ZSight does not. I only get video from the cameras when I am at home, on my home network. Don't get it in 4G, don't get it on any other wireless networks, whether open or secured with a password. When the session has failed, and I re-log in, ZSight will quickly go to the "grid view" and I get a message that says "no device," even though it displays the device name in the upper left corner of the grid view, and the device name and ID appear in "Basic Info."
What is weird, is that I get motion alerts in ZSight remotely, with the little red box and the number of alerts on the right side of the top of the grid view and I can see the snapshot of the alert without anything else working. I also used to get the small "Z" icon on the top of my phone indicating an alert, but that's gone too.