what the hell? 
Pacific time now:
10:20 AM
Friday, September 1, 2017
Pacific Time (PT)
couple of posts for you to possibly read through, also suggest reading down to where the coin log examples are shown from Chrono, which highlights the “timing” issue you can encounter
https://206.81.1.216/t/lost-my-coin-streak-even-though-i-checked-daily-is-this-even-possible/3065?u=gnuffi
https://206.81.1.216/t/chrono-coins-bugs-feedback/2381?u=gnuffi
https://206.81.1.216/t/you-broke-my-streak/5007?u=gnuffi
99.9% of the time it seems to be human error, as with most things in life 
You are counting the 14 day chest as a separate day when it is awarded the same day as the last daily reward, i.e. 30/08. You missed the 31st and clicked again on the 1st.
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