RLC-810A web GUI refuse to connect

[RIPRengineer]

I have an RLC-810A camera that is just acting plain weird. Sometimes it'll work fine for a few days, then it just stops working, period. It will grab an IP address from my local router; I have it set to give it a specific IP (like 192.168.99.101, for example) based on the camera's MAC address...and I can see in the router that it IS getting that IP on a DHCP lease. But the web GUI doesn't work; I can't open the IP address in any web browser. It just says "This site can't be reached; (IP address) refused to connect." That's the sort of thing you often see when a device with a built-in web server will only respond to https queries, but the http forwarder isn't working. Still, I tried putting "https" and "http" at the beginning of the IP address and no luck. My Reolink RLN8-410 NVR cannot detect the camera either. Doing a hard reset on the camera does not fix the problem, but I can tell the camera HAS been reset because the router now says the device getting the IP address is "Camera" instead of the name I originally gave it. Any ideas to try?

[Reolink Lorenz]

@riprengineer Thank you for the feedback. We may need further information on this issue to get it fixed. Please submit a request with the link below and our team will get back to you asap.
https://support.reolink.com/hc/en-us/requests/new/

[joseph_1979]

@riprengineer Go to Networks/Advanced/server settings. Check that HTTPS is enabled. If you want to use HTTP then enable HTTP too. Refused...means that you are reaching the camera but the service is not enabled.

Another test is to let the router assign the IP through DHCP. Remove any policy associated with its MAC address.