Hello,
This isn't an issue we'll be able to solve on the forum, but we are aware of the issue, and it's related to your key itself.
Please create a ticket here, and include the following:
Your Xbox username
Your serial key
Your order number and email address the purchase was made under
Have you activated the product on multiple devices, such as a secondary PC?
We'll then get back to you and help you resolve this issue.
By
Tom ·