Don’t accept my license key

I purchased AVG internet security (10 devices)
Tells me my license number not valid 
Try to install on IPhone 

thanks

Hello, Jennifer

To install and activate your subscription in your iPhone, I request you to contact our mobile team.
Please click on this link: https://support.avg.com/support_contact_form?l=&retUrl=support_sales .
Select the option as "YES" and the operating system
Fill in the details and click on the option "answer via email"
Once your request is submitted you will be getting the prompt answer via email from our mobile team