You are currently taking care of it, so it is not something "to take care sometime in the future". I am just suggesting what I think is "more effective".
In addition, the new registration from the main GUI takes some seconds.
Thinking that Avast (or any other program / software / hardware / person / magic / government / party / other) will take care of your own security (or your friend's) as your first defense level is simply wrong, IMHO.
Avast is not the first defense. The first defense is the user itself. The user should take the first responsibility.
I just suggested you can teach the very simple method, even by phone.
If your friend doesn't want to learn, doesn't want to take some seconds, once a year, to renew a registration with some simple clicks...