This is similar to Thread Below:
https://forums.plex.tv/t/live-tv-dvr-live-tv-stopped-working-after-update
Look at post #22 - Side-loading a Beta Version of the App is a band aid until a stable public version of the App becomes available.
I did test 27327 which did work, EPG does update. Keep in mind beta apps have some minor flaws. I found this to get me through for the meantime. Hope it helps you.
