I noted Avast Antivirus was missing from Google Play Store a couple of days ago when trying to install it on a new phone. I also noticed that my subscription to the Premium version no longer showed up although My Google Account showed my payment. I contacted Avast to be told they could not find my subscription in their system. I finally called Google yesterday who confirmed the missing App, and the fact I had purchased a subscription to the Premium version; but they had no idea why the App had been pulled from their Store.
Glad to hear Avast appears to know what is going on, but, seriously, why not find a way to advise the membership OR at least Google!
Thank you