New PC Problem

[Feuerpfote]

Hello!
Here i am again... (i am from german, sry for bad english)
I have buy me a new pc, and i want my Amnesia TDD install on it,
But i cant re-downloading the game, but i have buy it...
i go on this side: http://store2.esellerate.net/Store/Support/default.aspx
And enter my e-mail so i become my ordering number, i tipped in, but then i become the message:

Unable to complete your request...
The Frictional Games product line is not available through the eSellerate system.
For more information, please contact Frictional Games.

Error: Pub_NotApproved

Can someone please help me? I want my game back ._.