It is clearly shown before a person finalizes the the payment.
Sorry to say you it's not shown for a lot of us.
Personally, I looked closely at my contract last October.
Carefully because I have followed the messages of many users right here.
I wanted to get a clearer idea, and nothing was said about renewal.(no more little "*")
However, by logging in to my account later, auto-renew was enabled, so I turned it off.
Without this early precaution, I was good at seeing my account debited in 1 year, as many users were.
And I repeat, even validated at the time of purchase by the customer, it is illegal in France if the seller does not notify 1 month before payment.
Of course, the case never goes to court, all the returns of the users concerned say they have been repaid.
Now, you can say that I'm a liar and that my eyes were not open enough on the finalization of my payment, but it will not change anything.
Edit:sorry , it's not my topic but good luck to neosimultanic and selini50 , I'm sure they would have preferred that we (simple users) give them items to go chat with avast and get refunds instead of telling them they can not read carefully (even if it's true)
We are not employed so avoid saying things that is not able to prove.