Hello Steve,
Could you please open a support ticket and attach your log file? Your log file can be found by going to C:, Program Data, Avast Software, Avast, Log. In the log folder you will see a secureline.txt file. That is the one we need.
The program data folder can be hidden, so to access it you’ll need to go to Windows Explorer, then View and make sure “hidden items” is checked
Apologies for this situation
Best regards,
Davidek