I am trying to set up the Microsoft account on my daughter's Nokia Lumia 520. There is a prompt that I need to OK it as her parent. I do this, using my Microsoft account, but it says my name or date of birth are incomplete. I have accessed my account and verified that they are complete. Does anyone know what else I can do??
The answer to your problem and more is covered in this article http://www.windowsphone.com/en-us/how-to/wp8/apps/my-family-on-the-windows-phone-website