What I would like to try is deleting Plex Media Server HTTP EPG cache and see if it makes a change
So shut down Plex Media Server, delete or rename this cache directory and then launch Plex Media Server and scan channels and refresh the guide and get me logs
/var/lib/plexmediaserver/Library/Application Support/Plex Media Server/Cache/Http/tv.plex.providers.epg.onconnect
