Purchased Ultimate 2015 two year from Amazon but can't figure out where to input the license

Oddly AVG doesn't even list ultimate as a product.
I tried the support pages and they don't show instructions on how to put in the key on Zen.
Can anyone point me to help with this? My systems are currently running "free" mode so would like to get this working.
Thanks,
John

Well answered my own question. You have to do it through a link in your Amazon.com account. Got it working.

Well answered my own question. You have to do it through a link in your Amazon.com account. Got it working.