Promoting child account

I have been a child account for years now ever since I created my account, but I'm 18 now and going to college in a couple months, but it still says my account is a child account. This is really annoying me, because I am on my own now and am in college,
but I still can't control my account. My brother (who is my "adult") is trying to find a way to promote me, but we can't. I am on Xbox one and live in the U.S. How do I fix this?

:)

 

Cannot download Free Gold Game: Hitman Absolution due to "Child" or "Teen" account??

Have a look at this link to help you with promoting your child account to an adult account

support.xbox.com/.../promote-child-account

 

Promoting child account

This error is not documented, but I have a hunch... since Microsoft is security minded and protects your account data, they added proofs to secure your account. And, since Xbox LIVE accounts are built on top of Microsoft Account security, that applies to
gamers like you and me. Proofs can include:

1) A phone # (preferably a cell # to text you a message - very convenient when away from home)

2) An alternate email address (which can be used to send a password reset confirmation to)

3) A 'Trusted PC' (requires Windows Vista or later + the free Microsoft Windows Live Essentials app)

4) A Security Question and Secret Answer

If you don't have these (#1, #2 and #4) filled in, you will be required to do to, so visiting
http://account.live.com/ and clicking on Edit security info is a good idea.

 

go to account settings on your console and see if promote to adult account is there

If it isn't you must wait till the actual date of your 18 th birthday or whatever you put in originally and no it can't be changed after wards

 

My 18th birthday has passed. I have my ID to prove it and everything, but it's still not showing up anywhere I look. I doubt I put in the wrong date, but is there anyway to check that? If I did put the wrong date in that's extremely annoying...