Wrong email address

Hello David. I would request you to chat with us at http://avgclick.me/SupportContacts

I recently installed the AVG Ultimate 2015.  I put in the code number, was told another email adress was using this code.  The email address is mine but with 3 numbers added onto it.  I know it is my email address because the numbers added are part of a password I use.  I mistakenly put the numbers in thinking I was on anotherr line to put in a password.  How can I correct this?  Please help.

Hello David. I would request you to chat with us at http://avgclick.me/SupportContacts