Server Version#: 1.13.8.5395
Player Version#:Web GUI (and Roku)
I noticed my NBC recordings were no longer happening: I realized that Plex can no longer tune it in. I checked the HDHomerun App (Extend), and that tuned the channel just fine. Other channels seem to tune fine on Plex (i.e. ABC, PBS, etc.)
Troubleshooting steps I took: reboot HD Extend, and rescan channels. On Plex, I deleted the DVR, and recreated it. Still no luck.