Unable to activate?

[MarcelvKollenburg]

Dear sir.

I have a bit of a problem, i can't register anny of the cloud9 products, it keeps showing error 25001. I own Amsterdam, Frecce Tricolori and the F-104 Starfighter. What could be the issue. I have used the Ordernumbers in my mail, and stil it doesn't activate.

[virtuali]

i can't register anny of the cloud9 products, it keeps showing error 25001.

This errors means you typed the Serial wrong

I have used the Ordernumbers in my mail, and stil it doesn't activate.

That's the problem: you shouldn't use the Order Number, you have to use the Serial Number, as explained here:

http://www.fsdreamteam.com/forum/index.php?topic=2354.0