translate.google.com:
Warning: gift copies of Europa Universalis IV: Guns, Drums and Steel Music Pack can be added to the library of the recipient, only if it is in one of the following countries: Armenia, Azerbaijan, Belarus, Georgia, Kyrgyzstan, Kazakhstan, Moldova Moldova, Russia, Tajikistan, Turkmenistan, Ukraine and Uzbekistan. Only countries: Armenia, Azerbaijan, Belarus, Georgia, Kyrgyzstan, Kazakhstan, Moldova Moldova, Russia, Tajikistan, Turkmenistan, Ukraine and Uzbekistan.

Thanks mate

Thanks very much.

I have reported this for not following this rule:
Do not submit CD-keys or Steam gifts that have regional restrictions, or those that require VPN activation or methods to bypass regional restrictions.

I won one of these keys a few days ago without knowing it was restricted.