Thank you for providing us the information, Alex. We'd suggest you to take advantage of our free remote assistance to sort this in a easier way. An email which has the steps has been sent to you. Please follow those steps & connect remotely with our next level of support.
I have AVG in a Windows partition (Win 10) and it serves my iMAC in the MAC portion as well. In MAC there is that warning relating to this correspondence - File Shield is Off. You suggest turning off the MAC antivirus and downloading a new. I can access AVG only through Windows, so how do I proceed? Does this mean purchasing a new MAC antivirus?