I'm having similar problems. I had scheduled some workouts, set a goal, set my weight and some other things. Today it shows someone else's goals, weight and height, and none of my workouts are scheduled.
I'm certainly not frustrated or annoyed (althought everyone has the right to react how they want to), since we were told several times that there would be lots of bugs. This is a beta version of the site, so I'm just playing around and not counting on any of it for quite a while.
Wendy