Thank you !
I'll have to find a way to deal with that issue. Is it a global problem or does it impact only Steam ? If it was on Gog, would you be able to buy it ?
I already bought some games on Gog, that were not available on Steam in Germany, f.e. Summer's Gone. To circumvent it, I tried VPN from another country and create a new account, as my german account is blocked, but Steam requires now a Payment methode from the other country. But I could still download from Subscribe Star.