The paid for version does not provide me with features that I want or need. What really bewilders me is the premium feature irrelevance advertised by the popups. I am used to being warned that my stated location is sometimes hundreds of miles away in several different places from my actual location. I am warned that my web cam is visible when Windows 10 Privacy has enabled me to make it inaccessible to all processes except Skype (in my case). This makes Avast look less than competent.
As I have previously stated, Avast Free is a great product in which I have the greatest confidence. It operates co-operatively and sociably with other installed security products. False positives are unknown to me. I would not willingly use another product intended for the purposes that Avast is designed for. Its essential effectiveness, according to VirusBulletin, is superb.
By all means may Avast make its Premium feaures known to Avast Free users but not under the guise of security alerts. The advertising popups are clumsy tarnishing of what should otherwise be Avast's gleaming image. I would hazard a guess that those who are responsible for the popups are not those who are responsible for the specification and design of the essential functional features of Avast's excellent software.
I've said enough. Like WC Field's pig, I will now get up and slowly walk away.