Changing email address associated with free Avast account

I’m running Avast free edition on Windows 7. How do I change the email address originally associated with my AVAST account? It was a Yahoo email. I closed that email address a month ago and have a new Gmail address. Does anybody know how to do this? All I see under PROFILE is how to change a password. I am not talking about changing the email address in the https://forum.avast.com/index.php?action=profile;area=account FORUM PROFILE, although that would be good to do as well. I am more concerned about communications from AVAST when the yearly license expires. Thanks.

Please don’t post the same question in multiple locations - this just duplicates the load for those trying to help.

Your previous post here https://forum.avast.com/index.php?topic=157370.msg1173641#msg1173641, has been answered. In the post I made directly after it.