Can't buy Xim due to country error

[Indoril]

I want to buy a mount an possibly other stuff but am unable to purchase Ximerin since there is no country set in my account details.
My actual account is Tureynul, I play solely on Horus (since some of my friends are there, the German (I live in Germany) standard servers were never an option), thus I had to use a proxy program (ultrasurf) to create a non-gamigo account, which led to the described error and my current problems.
Setting my country to USA would presumably solve my problem...
Probably should have used this account to contact customer support directly (didn't work with main acc., six blocked requests due to wrong category/lack of forum acc., no response so far to request send by friends in my stead.), but I think my chances of getting a response are higher in this forum.

Thanks,
Indoril/Tureynul