I foolishly set my recording to delete after 90 days or HDD over 80%. The latter is no problem but the former wiped out all my recordings that started in April 2021 (it's early December 2021 now). Is there any way to recover them?
I imagine you have tried the various utilities for recovering deleted files.
There is no way to recover them with PlayIt Recorder. However you could try Recuva (https://www.ccleaner.com/recuva) which I have had some success with in the past.