MymsMan
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I have also seen occasional failures to schedule recordings https://hummy.tv/forum/threads/new-scheduled-recordings-not-adding-to-the-schedule.7254/Just did a test.
Recording appeared at top of Schedule page as Pending.
Clicked the Reboot now button...
I think that might be it.
I normally don't click the Reboot now button and so those pending recordings sit there for hours until I shut it down at night.
It is then awakened by a 4.20am reminder.
Maybe it forgets?
Unfortunately unless you are an insomniac you are unlikely to see the logs from the early morning restart and it rarely fails when you are attempting to recreate the problem