I have an older HDHomerun on a mostly wired network. I had DVR recording working about a year or two ago. I remember it involved a "Network Tuner" input source which now doesn't seem to exist anymore. I have the the HDHomerun App as my source now. There is a 4TB USB drive hooked up to my Shield, formatted as internal storage. Plenty of space. Whenever I click on a future show in the guide, it says something like show cannot be recorded. Was this functionality removed? Am I missing something?
Edit: And before anyone suggests it, I'm not interested in any subscription-based solution like Plex Pass, or using any other software like Kodi. Thanks.
As far as I can tell this is a problem with Live Channels since the 2017 fall update. It does appear that Live Channels is ignoring the issue and all communication about it.
Sorry your only recourse is to pay either HDHomerun or Plex for their DVR or use a Kodi type DVR which is a bit hard to implement. A bit of learning will be needed.
Sorry not what you wanted to hear.