Product load error message

Rosemary, Please refrain from carrying out multiple postings on the same subject! You won't obtain an answer to your query any faster! See posting (https://support.avg.com/answers?id=906b0000000D3ppAAC).
AVG Guru

I just purchased the CD for AVG protection, two years, unlimited devices.  It installed on my desktop, Win 7 Pro.  However, when I try to add it to any other product, I get a red error message saying this product is already registered to another user.  Yes, I know!  It is registered to me!

Rosemary, Please refrain from carrying out multiple postings on the same subject! You won't obtain an answer to your query any faster! See posting (https://support.avg.com/answers?id=906b0000000D3ppAAC).
AVG Guru