Installing serial number to unlock trial version of avg pro

I purchased avg pro in May, but failed to put in the serial number to unlock the trail version.  I was called out of town and now I can not get this computer to un lock the trial version even though on my account it is shown as paid.  I log in to my account but do not see a way to open this trail versiosn

Hello Patty,
We regret for the inconvenience caused. While verifying your account you have AVG performance as your active subscription. Please make sure whether you have activated your AVG Program using your AVG My Account credentials. If not please follow the instructions on the article http://avgclick.me/ActivateZen to activate your AVG program. Please feel free to contact us for further assistance.
Thank you.

Hello Patty,
We regret for the inconvenience caused. While verifying your account you have AVG performance as your active subscription. Please make sure whether you have activated your AVG Program using your AVG My Account credentials. If not please follow the instructions on the article http://avgclick.me/ActivateZen to activate your AVG program. Please feel free to contact us for further assistance.
Thank you.