In the past few days, i have no problems synching but the dashboard on my Galaxy A3 isn't showing steps or calories on the dashboard. If i click on them to select,,they show the stats in the background,,just now dashboard home page.
Blaze itself is fine, online is fine,,just the phone has the issue. It also updates correctly over night and can see "yesterdays" stats where they didn't show during the day itself.
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It might be that you are being affected by a bug that fitbit are looking into. Keep an eye on the following thread which has the latest updates from fitbit: