History for past weeks are now empty

[d4Gambit]

[macOS 11, Firefox 102.0.1]
I just found out BetterHistory only has the past 9 days saved. This is the first time this happened.

I browse the internet daily using only firefox and BetterHistory is always active, and the regular firefox history has the past month saved, so I'm wondering if there's a way to get the entries back? Perhaps there's a plain text log or backup file somewhere I could open or import?