Problem with xbox.com account and signing in to game

We just purchased a Halo game from the Windows Store and downloaded it to my sons account. The game itself works fine, but it does not sign him in. It works fine for him to login tp the local Xbox App and start the game from there, but signing in to the
game renders an error message asking him to sign in at xbox.com and restart the game app.

Logging onto xbox.com works fine, but once logged in he does not get the start page as I have as an adult, and when trying to access the Profile and other pages we get an error message. See picture below.

I have had two different chat sessions for almost an hour each and once they get think the problem is due to my son having a child-account they drop the chat session.

As we don't have an Xbox console there seem to be no way to change his settings to allow him playing. I have added him as a child to Windows-family, but that does not seem to add him to the Xbox-family, and I have no way of adding him to the later.

Does anyone recognize this problem? And hopefully have a solution for it??

:)

 

Why can't i purchase any 360 or xbox games?

Just go to Xbox.com sign into your gamertag account and buy the games digitally on the website.

 

How to Troubleshoot profile-password errors

It is possible to restrict access to your Xbox LIVE profile from any console by making it necessary to use your Microsoft account password to sign into your profile.

You may encounter the following errors when you try making your password necessary for sign-in:

• "Sorry, there was a problem requiring your password for sign-in on other consoles. Your password is still remembered for other consoles. Try again later, or try requiring password on sign-in from www.xbox.com. Visit xbox.com/security if you think someone else is accessing your account."
  
• "Sorry, there was a problem requiring your password for sign-in on this console. Your password is still remembered on this console. Try again later, or try requiring password on sign-in from www.xbox.com. Visit xbox.com/security if you think someone else is accessing your account."

Solution: Set a password requirement on Xbox.com

1) Click My Account

2) Go to Settings & Preferences

3) Select Xbox 360 Profile Protection

4) Sign in using your Microsoft account (email and password associated with your Xbox LIVE account). You will see the number of consoles that don't require a sign-in password to access your Xbox LIVE profile.

5) Click Protect Profile. This will make it necessary to download your profile again using your Microsoft account before it can be used on any console. All previous copies of your profile will not work, and any changes or achievements that had not yet been saved to Xbox LIVE will be lost.

Important: If you feel that your password has been compromised, you can change your Microsoft account password by following these steps:

1) Sign into accounts.live.com using your Microsoft account.

2) Got to Account Information, and next to Password, click Change.

If you are unable to set a sign-in password on Xbox. com, you should check the Xbox LIVE service status.

If the Xbox LIVE service status is up and running, you should repeat the process later.

If the problem persists, contact Xbox Support.