Hmm, I am not sure about your NVR. I don't have any problems adding my cameras to BlueIris regardless of the subnet it is on. It is only finding cameras in t he Config Tools where I have problems finding them. Does the NVR allow you to specify an RTSP feed? If so you can use something like this: rtsp:/192.168.0.247/cam/realmonitor?channel=1&subtype=0&unicast=true&proto=Onvif