Updated: Oct 3, 2021
There is currently an issue with the PLEX MEDIA SERVER software that is causing guide data to sometimes reflect wrongly on TV's but reflect correct on a desktop computer. A ticket to the software development team has been completed. We're awaiting a response.
9/19/2021: Testing Plex Update V24.x.5033 to see if is resolves problem. This has been tested and did not resolve the problem.
Solution: Must purchase a Fire Stick or Roku for best performance until Plex Resolves this issue on SmartTV. Alternatively, you can stream from a computer. In the Future, we will be changing over to EMBY which will require a Fire Stick, Roku or Samsung TV.