Typo in domain email adress - How to change?

Hello Brian,
We have sent an email to your registered email address to contact our Sales support team via chat to get help. They would help you with the email address change.
Please, feel free to let us know if you require any further assistance. Thank you.

Hi 
I made a typo in the domain name of an college email adress and now i cant get the confirm email on the AVG ultimate i bought for him and i cant change it as because i also made a registration with the right email

What to do??

Hello Brian,
We have sent an email to your registered email address to contact our Sales support team via chat to get help. They would help you with the email address change.
Please, feel free to let us know if you require any further assistance. Thank you.