I am having problems with mine today. I've been using it just less than a week.
I walked down to the church (at least a mile) and my steps were only 500 when I checked it. It is working so I don't know when it was not functioning.
The online support is useless: I typed in "steps not tracking" and it gave me many questions, none of which were applicable.
I came here to see if I could find out anything but haven't tried to contact Fitbit support.
Please let me know what you find out. In the meantime I am walking around my house and checking the Fitbit to see what it says!
| current weight: 140.0