Smart TV app says "The server is currently not available"
I am brand new to Plex. I am trying to connect my MacBook Pro with my new Samsung Smart TV. I started by successfully creating a media library through my laptop browser. Then I downloaded the Plex App on my TV. I received a 4-digit pin, which I entered into the browser on my laptop. When I open the app on my Samsung, it shows my laptop sever name with a red "X" and "The server is currently not available." I cannot click on any other options or settings with my TV remote. It is frozen on the red X and error message.
My server log is attached here.
I am using Plex server Version 18.104.22.16895 and Mac OS 10.12.3.
Any guidance is hugely appreciated, thank you!