Log in to your https://oyunsoft.com/account. Go to “https://www.oyunsoft.com/cuzdan” on Oyunsoft.com. Click on the “https://www.oyunsoft.com/cuzdan?t=payments” option. Enter the code you purchased from Kinguin into the “https://www.oyunsoft.com/cuzdan?t=payments” section. The balance equivalent to your purchase amount will be added to your account.