Media Server Not Found - LG TV Media Link

Hi All,

I used to enjoy my videos on LGTV Media Link. TV Model 42LW5700, Firmware version 05.10.05. Recently I can't access the server.
In Device Selection, I can see my Plex Server listed. A click on it doesn't take me to the server.

Running Plex on MacMini macOS Sierra
Plex Server Version Version 1.2.6.2975

No issues in accessing my server from iOS, tvOS, Roku, Android devices.

Any clue how to fix this?

Thanks,
Satheesh