You can disable the ads in the paid versions: Avast GUI -> Settings -> Personal Privacy
However, these settings do not prevent all notification popups, such as the new "Important Cybersecurity Information from avast".
Even if this kind of information is legitimate, the customer (paid versions) should be able to choose whether to be notified or not ... at least that a (general protection) window does not open wide when not requested, but can be opened manually in an area of the application or better in the "notifications" area.
edit:On the other hand, for those who have involuntarily closed the window or who would like to see it again, it is difficult to find it at another better time ... later.
They would not have this problem if the information was in the notifications.