NVR Not picking up camerasa and cameras go offline

[rtaylor115]

NV4432E-HS 32 Channel POE with 25 ProHD Outdoor Bullet cameras (1920TVL)

NVR is on 192.168.0.x subnet. Cameras are on 10.1.1..x subnet (automatically assigned by NVR???). DHCP server shut off on NVR.

11 cameras online - but go offline frequently, The other 14 cameras, who know what's going on - they aren't picked up in a scan. 9 cameras are plugged into a Netgear POE switch and yes, every port has POE turned on.

I attempt to log into found cameras from the NVR - the option is grayed out. I place my laptop on the same subnet as cameras and unable to find camera (can't ping etc.).

Any clues??? I checked firmware - none shown. Could this be related to Amcrest's inability to support modern technology?