I've been having a lot of difficulty with my Fitbit Versa 4 recently - the mileage for the same run/walk will vary every time even though it's the same exact route (I have already adjusted my stride length and that does not fix the problem). I've recently had to restart my watch several times because it gets stuck on one heart rate. The most recent issue is an error with the "time in each zone" part of the app when you track an excercise. You can clearly see my heart rate was in vigorous/peak for almost the entirety of this excercise, but the zone below says 74% in light. Also I ran this same exact route last Saturday and the distance was off by 1/4 mile.
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