The endless nuisance adds by Avast

@Avast please stop the relentless barrage of adds for apps I don’t want. I tried to find an email address for you but could not get through the auto barriers.

First, I’m an Avast user and not an Avast Team member.

You don’t say what Avast Program you are using and posting in the General sub-forum doesn’t give any clue.

Look at the Notifications and Personal Privacy Settings.

Managing pop-up notifications in Avast Antivirus Premium

Also check the AvastUI > Menu > Settings > General - Notifications, I would suggest using the Pop-up Notifications treatment - Limited Mode.