Xbox LIVE Games: Can't Connect to My Account

I have a LIVE account on my 360 but I can't get Win8 to connect to it. Instead it made a brand-new account. I don't want to have two separate accounts and I can't even figure out how to log out of this one. Can someone explain what's happening?

And I really can't post a status in the People app (Facebook)? I keep having to to back to the Win7 desktop. Will this all be rectified in the final version?

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