I have Avast Premium and I am so feed up with the advertising popups to upgrade to the Ultimate Bundle etc etc that I am ready to dump Avast altogether.
Is there anyway to turn off these ads…
Yes there is for paid versions like yours.
Avast UI > Menu > Settings > General Privacy > Offers - deselect those that you don’t want.
Now I use Avast free and it is very limited on my installation. In paid versions there are more and I’m not even sure if it is exactly the same location, so that would be your starting point.