I don’t use the media server and only use the Plex app which is not working. When you start it up it dies after about 30 seconds even without touching it. I don’t see that being addressed in the thread link where I also posted.
Update
I was able to fix my client issue at least based on details in this thread
Shield Experience 9 Client Crashes Constantly - Plex Players / Streaming Devices - Plex Forum
Apparently the plex app doesn’t automatically update so you have to go in and do it from the google page.