LG C3 Not working with PLEX

Once again. I download the plex app onto my new C3 LG OLED TV. Install app. Login into my server NO ISSUES. Loads all my movies tv shows etc. However, when I click on anything the loading icon just appears and spins forever. I tried changing trust insecure to always. Restarted my router. Updated my TV. Everything I can think of. Plex works flawlessly on ALL my fire sticks and my hisense without any issue. Of course this brand new main 77 inch tv of my home and it won’t work. What can I do here? I really don’t want to get a firestick just so I can use plex on an LG TV. I feel its the TV preventing me from playing the movie. But I really don’t know

Thanks for any help.
Doc

Look at the playback details on the server. And enable and show your logs.