Yeah I have the exact same problem, I made sure that the privacy settings on Xbox.com was set to everyone, and unless I have to check on the Xbox itself (if you even can) I don't know what else to do. At the moment I'm just waiting it out to see what is going to happen.
*Update* It's funny right when I check back to see if anyone posted on this thread, I clicked on my achievements and what do you know, they're there.
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