I downloaded 1.6.4 and a day after playing it i logged out and went back in but it says play demo but i bought mine craft!

Put the summary of the bug you're having here

What I expected to happen was...:
to play mine craft and i bought it last year

What actually happened was...:
it said play demo but i was logged into my account and this is happening to other people

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
3. ...