1)Google gift code activation must be carried out from Turkey (Türkiye).
2)Google Play digital recharge code is activated only if the region of your account is Turkey, and the payment profile is defined as Turkish. You can check this on the payment information page here: https://payments.google.com/gp/w/home/settings .
3)Codes are not subject to exchange or return. Before purchasing, be sure to check that your account meets the requirements above.