I want to cancel my subscription to Avast
Cancelling automatic renewal of the Avast subscription - See https://support.avast.com/en-en/article/35.
You have to call them or chat with them now it appears. At least I logged into my account to cancel a product and I couldn’t get it too work. I had to follow links to start a chat session with an agent.
I don’t work for Avast, so I can’t say what the policy is - however, the link is still available so should still be possible.
Did you check it out ?
This link is also available via the one I gave previously - How to cancel the renewal of a subscription via your Avast Account | Avast