Things to pay attention to before redeeming a Google Play voucher: 1. Make sure your age on your Gmail account is 13-17 years or older. (18+ recommended) 2. When exchanging codes, don't use a Wifi connection and don't use a VPN/device that is detected abroad. 3. Not currently abroad. 4. It is recommended not to use a new Gmail account. to avoid error codes with descriptions (requires more info) 1. Make sure your Gmail account has/often redeemed the Google Play code. 2. If you are unsure about your Gmail account, you can first try buying a GPC 5K to test that your Gmail account is healthy. 3. If you buy more than one voucher and the first time you try it has an error/requires other information. DO NOT CONTINUE WITH THE SECOND CODE because you will get an error too. Thank you for your attention Happy shopping