I’ve been puzzled over the last few months when some recordings haven’t happened that I expected to work. For example, when Archer returned last month I set a recording for “new episodes” and my memory is that the first two or three episodes recorded as expected, but then I started missing shows. I checked yesterday morning and even though there was a new episode scheduled, it did not show up in the PLEX recording schedule. I opened up the hdhomerun_view program on mac and searched for Archer it did show up, so I set the recording using that program. This morning I see it did record - but the filename is “Archer S08E92 20170517 [20170518-0200].mpg” - Ah ha! E92!!! Should have been E07. I assume that info came from the program guide…maybe that’s why Plex didn’t record it?
I don’t really know much yet - I’m going to keep collecting data, but thought I’d share this experience in case it triggers someone else who has seen erratic behavior.
Note: I’m running version 1.5.5.3634 of Plex
I’ve noticed this as well. Brand new series won’t record at all or will stop recording at some point unless I switch to “new and repeat airings”.
My Humax works just fine, so it’s either a sw issue or an EPG issue I guess
Things like that are most likely due to the EPG. If it doesn’t have the NEW
flag in the data, Plex doesn’t know it’s a new episode, and will skip it. It really depends on what sources Gracenote get their data from, what they supply, and what Gracenote supply Plex. 
My problem has gotten worse. Today I have NO schedule recordings showing up. I’ve even tried deleting the dvr and re-configuring it. Nothing. I search the program guide for Jeopardy, Big Bang Theory, Seinfeld, Modern Family, all of which should show up daily and nothing. Very odd. I did test recording a Matlock that showed up in the program guide and it appears to be recording, so I guess that ties the issue to the EPG. Sigh.
Please update to the latest Plex Pass build, 1.7.2.3878. We’ve done some work which hopefully will fix these recordings issues.
are the details of what you’ve done in the release notes @keithah ?
He’s on 1.5.5, so there’s been extensive work done in the last 2 months regarding this, and I’m honestly not sure whats reflected in the release notes between the dozen or so versions we’ve released in between. 
Well there is no mention of fixing EPG issues in any of the 1.7 release notes.
We had a bunch of 1.6.x releases to Plex Pass as well, might of been in one of them.

This is on my mac with version 1.7.2.3878 installed - you can see that the HDHomerun client knows jeopardy is on tonight but Plex does not. I’ve tried deleting and reconfiguring the DVR to no effect.