Region restricted, I added that info when created giveaway, but will add here just in case too

Can be activated here

Armenia (AM)
Azerbaijan (AZ)
Belarus (BY)
Georgia (GE)
Kazakhstan (KZ)
Kyrgyzstan (KG)
Moldova (MD)
Russia (RU)
Tajikistan (TJ)
Turkmenistan (TM)
Ukraine (UA)
Uzbekistan (UZ)