I will not even comment on the "Advance Issues" that the Avast is showing...

Ransomware, isn't what him, Avast, should try to prevent. Even not having that folders vulnerable, when Ransomware attacks it's the all HDD that is encrypted, not some folders... Okay it looks for certain types of files, like .pdf, .zip, .jpg, .jpeg, .doc, .xls, etc. If he can't prevent, how good he is then?
The Firewall, well I don't know any AV suite that considers hardware Firewall or even is able to detect it. Even if you have a problem connecting to the Internet, they will say in the "FAQs" to see if the connection is not being blocked by a firewall. OK I know, some of the EndPoint ones can connect to an hardware firewall if it's running a plugin or is from the same brand (to my mind comes BitDefender and Panda Security).