I bought a 4 camera Reolink RLK8-410B4 system from Amazon. I also bought a 16 port Netlink POE switch. All the cameras (and other devices like an access point) all plug into the switch as does the NVR. About twice a week, I lose signal on all 4 of the cameras at the same time. I know I am not losing house power at that time as I have been there several times when it happened. I did not lose wired Internet so I don't think it is the switch. The switch is unmanaged so I can't really look at logs to see what it thinks happened. I have looked on the NVR and aren't finding a log to review either. Can anyone help me figure out why I am losing signal?

My NVR is very quiet, but I use an external POE switch. I wonder if the increased power draw of the POE causes the fan to work harder and make more noise?

I bought the Reolink RLK8-410B4 and have been very happy with it so far. But I am confused as to how it all works together. I believe that each camera has enough CPU to support a web server and that the camera has configuration settings that it maintains on the camera itself.
1) When I make configuration settings for the camera via either the NVR or the Reolink app, are the settings maintained on the camera itself or on the NVR? Does the camera communicate with the NVR for settings? Or does the camera think it stands alone and only uses the NVR for storage?
2) How does the Reolink app (either Windows or Android) work in conjunction with the NVR? I saw something yesterday that says if you make a particular configuration change (motion setting) using the Reolink Windows app, that it is only effective so long as the Reolink Windows app is up. If the PC goes to sleep, the motion detection stops. (https://support.reolink.com/hc/en-us/articles/360007521113-How-to-Set-up-Motion-Detection-Recording-via-Reolink-PoE-NVR-)
3) I had always assumed I would use the Reolink Windows app once the NVR was up and rarely, if ever, use the NVR for anything. Is that correct? Are there any functions that can ONLY be set/contolled by the NVR itself?

Nevermind, I figured it out.

I connected the NVR to a POE switch along with 1 camera. When I use the NVR, it sees the camera. I downloaded the Windows client and tried to connect to the NVR or camera and it can't find them. They are both on the same LAN. Any ideas?