DVR deletes some programs on its own
Searching the forum, I see this has been a fairly common problem. My DVR is at 59% so that's ruled out. I have some programs on there from 4 years ago so it's not deleted those automatically. There is no longer a "keep" option available. And no, they are not at the bottom in my recently deleted option. Other than mysterious deletions, there are no other recording/watching problems.
For obvious reasons, I hate to swap it out in the hopes that this solves the problem. Cloud DVR is too rich for my blood.