Since most people don't change their date of birth, and this is tied in to legal rules about age qualification, you will need to contact Adobe directly to fix any error. Warning, scammers may contact you privately pretending to be Adobe staff. Adobe will never send you a private message asking you to email an account that isn't @adobe.com, or use Skype. Adobe never ask you for their password. These scammers want your Adobe info, credit cards, your money and control of your computer, please take care.