I recently won a game in a tournament and wanted to see how it affected my rating, but it now says "unrated".  Any idea why?  

Because it was an unrated game maybe? You didn't state what game it was or in what tournament, but did you check that the tournament games were actually rated games?

I'm having the same thing. I can't see my rating anymore since it only says "unrated" where it used to say my rating. It's weird..

Ok thank you TheMouse! Feels better now :)

It didn't work.  

It worked for me..