The others 10.11.. so fourth... I have no idea why they are there.
These are simply the pre-defined default addresses for the PoE channels in the NVR.
So to start to get the camera connected, you need to change the camera IP address to 192.168.254.2
And you can use 192.168.254.1 as the default gateway.
As I was typing this I received the following message from Laview:
"Hello, Currently, our NVR systems do not support ONVIF 2.4, sorry for the inconvenience."
That may not mean that it doesn't support ONVIF - perhaps just not that specific, recent version.
I later realized that the power supply was too small (150MA). I now have the correct power supply. I will need to try this again.
This will probably be fine.
The camera product info from your link shows that the default IP address is 192.168.1.168
On the assumption that your LAN IP address range is in 192.168.1.x :
With the camera powered with your 12v supply, and an ethernet cable from the camera plugged in to your router, point an IE11 browser at that IP address, you should see the camera web GUI.
And the search tool should also work OK.
Note that after you change the camera IP address to match the NVR, you will lose access to it via the browser.
From the screenshots, that camera is running Herospeed firmware - looks a little like Hikvision (I wonder why ??).
It's likely to be a rebadged Longse/Catonk/Besafe camera.
If it really is IMX323 and not the IMX322 in the product info, this is the latest firmware :
3516CV200_IMX323_W_7.1.3.3 - IPC HISILICON SCHEME FIRMWARE - Herospeed Technology Limited
The Herospeed firmware also generally supports the Hikvision network protocol, so Hikvision's SADP may find it, and also you may be able to add it as a Hikvision model (if the NVR has that choice) or LAview.