Some please help me with this problem

Play it with the account you redeemed your code with.

Free trials still have some limitations. They are usually for the multiplayer experience and for the use of apps typically saved for Gold members. Free trials do not grant access to sales and freebies reserved for Gold members. As far as changing your account
from child to adult..try
forums.xbox.com/.../12.aspx

Thanks That is really helpful i will try it tonight.

Hi have you moved email addresses recently, as you can only change the email every 30 days. Here's a help page on what to do and what restrictions you may have.

support.xbox.com/.../switch-gamertag-to-different-microsoft-account

I was previously using Internet Connection Sharing and it wasn't working, so i bridged my Wireless and Lan adapters, yes i did select both adapters and chose bridge. Which one is the best option? Any ideas?