My HDHomeRun Tuner shows the correct information. MyGrio (30.5) is no longer broadcasting in my area. H&I is now broadcasting on 30.5.
I have tried using my Channels DVR EPG (which is correct) but causes other issues with Plex Media Server. Listing certain programs as movies but are not movies.
If you are getting your EPG data through the Plex server, then the data is coming from Gracenote. Gracenote gets its data from the TV stations. Plex isn’t involved with that part of it. You’d probably have better results if you contacted the TV station and informed them that you get your EPG data from Gracenote and describe the shows that are incorrect.