I seem to have lost all my stored data and can't find it. I re-downloaded the app but now it's empty. Is my old data stored somewhere on the web? I have been reading that I should be able to retrieve it from any computer but can't find mention of the site I should go to do this? If there isn't how do I use time machine to go back and find it? I don't remember ever doing a special sync or save for the info on the app other than syncing with i-tunes which suddenly lost all my apps.