Yes, I reinstalled Avast Mobile Security, and that is the only product that I have from Avast currently.
I do not use a data plan, so I cannot use 3G to check if the updates work with that.
I have not even installed any other app recently which might block this function.
maybe I will try to install a previous version of the app, because I think this app updated recently.
There should be an option in Android to go back to the last working app version.