Not sure why. I could always update before impulse was used to update. And I did buy the game, so my serial number should be authentic. I went into impulse under "register a product" and even tried to update there, same message.
If you contact mailto:[email protected] or [email protected] they can help you sort the problem
It should be [email protected], they're the ones to go to for registration issues They'll get you sorted out.
There are many great features available to you once you register, including:
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