How to add device channels that don't have guide channels

When I scan for channels I find more device channels than guide channels. Is there a way to either change which guide Plex uses so I can add all the device channels or add them anyway and just not have a guide available?

When you set up the DVR, there are options to select a guide (where more than one are available), however, I don’t believe you can’t add channels which don’t have a guide.

I have the same issue. Some Channels enabled from my Cablecard are not available in the program guide. This likely a issue with Plex DVR app that need to be resolved.