Noticed that the app (android) had no data for sleep, heart rate, or active hours for two days. Walked today - steps were counted, credited with exercise for the day, but no heart rate or active hours tracked. Updated my fitbit per the app and lost all my steps for the day as well. Though app still shows I exercised today and the time of my walk, but no hourly activity or steps. Flights of stairs still there as well.
