I just bought a house with 3 Dahua IPC-HDW5231R-Z cameras and a Dahua NVR5208-4KS2 NVR. The cameras are plugged into a switch and that switch is connected to my router and the router goes to the NVR. I know absolutely nothing about cameras or NVRs. The previous owner forgot his password so he told me to do a factory reset. On the NVR i clicked factory reset. After setting up the new password for the admin account when i try to connect the cameras it just shows orange and will not connect. I have looked all through this forum and Dahuawiki and just can't figure this out. Can something please walk me through in the most simplistic terms of how to get this working? I think my problem might be on the initial setup of choosing an IP for the network, gateway etc. Thank you