Even though I only enabled some channels. It’s still displaying all the channels my HDHomeRun Extend picks up. I even disabled the channels on the HDHomeRun and re-added it to Plex which only sees the channels I enabled on HDHR but somehow it still adds all the channels to guide. This is on Apple TV. Web App is fine.
Solution: You must wait for the Program Guide data to fully finish updating. Afterwards, it will exclude the disabled channels.