Incase it helps:
If anyone else has this problem it is because:
You made your XBL account before you were 18, and once you've passed that age, they believe you are still a child (child account), and to ensure your safety.. they will not allow you to go on messenger. Another issue is that it just doesn't work for others.:sick: After talking to them over the phone they said they will be working on the problem, (to be adressed in the next few months) and any updates will be noted on the website (xbox.com)
If anyone else has this problem it is because:
You made your XBL account before you were 18, and once you've passed that age, they believe you are still a child (child account), and to ensure your safety.. they will not allow you to go on messenger. Another issue is that it just doesn't work for others.:sick: After talking to them over the phone they said they will be working on the problem, (to be adressed in the next few months) and any updates will be noted on the website (xbox.com)