SpamSieve has stopped filtering spam!

Been using SpamSieve for some years - excellent product.
However, I’ve recently noticed that SpamSieve has stopped filtering spam!
I’m using Airmail 3.6 with iMac on Catalina OS 10.15.2
Is this an issue for anyone else?
Any ideas welcome…
Cheers
Henryk

It should work fine with Airmail on macOS 10.15.2. Please try checking the setup or send in a diagnostic report.