Are you using your Google account with the Play Store, and if so, did you give Google something to verify your age already?
https://support.google.com/accounts/answer/10071085?p=age-verify&hl=en
Are you using your Google account with the Play Store, and if so, did you give Google something to verify your age already?
https://support.google.com/accounts/answer/10071085?p=age-verify&hl=en