Failed from the start!

Hi I am a newbie to Avast purchasing a license in Nov 16. It is only recently I have realised that I mis-keyed my email address on purchasing the license and never received any activation key. Can anyone point me in the right direction to modify my email address so that when re-requesting the key, it goes to the correct email address?
Thanks in advance.

Contact avast https://support.avast.com/support/tickets/new

Support and FAQ https://support.avast.com/support/home

Thank you for your help and rapid response.