That’s strange. The sequence of your screenshots is not what comes up for me. As far as compatibility I’m surprised that a 2016 webos TV (firmware is 3.4.0-5803) is not compatible. Here is what I see:
Here are pics of my TV info that show it is connected to wifi but I didn’t see the IP address:
However, I was able to retrieve the IP address from my eero router app. I can also confirm it is online:
The mac address matches the TV so I know for sure it is the same device.
Since I know the device TV IP is there any way to force the connection or manually input it somewhere to see if it would work?