How to stop the avast spam

Every day when I turn my computer one, avast asks me to purchase new products. I have disabled all notifications and it still spams me. How do I stop it?

Avast support is full of userguides https://support.avast.com/

Search for pop-up

Or you can search the forum since this question has probably been asked a million times

https://forum.avast.com/?topic=325817.msg1713047