Ok, i appear to be mistaken. I didn't loose access to them, the game was just updated to have a lock graphic on them until i beat the level right before it. It just happened to be that i hadn't got past level 12 yet and i thought something was wrong because 12 levels is all that my friends with the game on iPhone get with their free version. Before the update there weren't locks and i could play which ever level i clicked on. Sorry for the false alarm.