Arosenatl,
There was/is a option to turning it off.
https://store.avast.com/store;jsessionid=CED2EF47DF6FBD43221EE3193B717A1A?Action=DisplayPage&Locale=en_NZ&SiteID=avast&ThemeID=38044100&id=QuickBuyCartPage

Did you go to the digital river website and logged in?

https://forum.avast.com/index.php?topic=110606.msg882380#msg882380