@ thomas_mg3Aside from what the others have said.
For me this is the greatest giveaway:
RE: Your Subscription Expired Today!Your device was infected With(187)V!ruses.
This is patent bullsh1t, 178 viruses, if this were true Avast would be alerting regardless of subscription. So in a day if this subscription cr4p was correct getting infected with(187)V!ruses at once patently ridiculous.
You would also have been having notifications in the Programs UI when your subscription renewal is near.
If you happened to be using Avast Free these would be frequent as you get closer - but you would still be protected.
Finally, have you checked the Avast UI to see what is left on your registration ?