Ransomware Preferences don't stick

Hi - I keep getting asked to say if an app should always be allowed (usualy LibreOffice) but some time later (possibly after a reboot) it has forgotten and askes again. I have tried doing it through settings and the result is the same. I have also tried to chage the folders that it protects and it forgets that too.

I am using Avast Business Antivirus Version 15.5 Licenced through Cloudcare and Running on MacOS 12.6.3