Activate my license

Instruction 2 says "click on support in the top menu, then reactivate."

How do I "reactivate" ???- - which key do I use ??? - - there does not seem to be a "reactivate" key or heading.

Hello Ian,
We are sorry that you are unable to activate AVG in your PC. Upon checking your account, it seems that you have purchased AVG Ultimate (1 year subscription) so you might have installed it in your PC. To activate AVG Ultimate, please follow this article http://avgread.me/1HOjOxZ .
Thank you.