Add Log; "Input" the log data.
Save; Save the data by clicking the "Save" button in the upper right corner of the screen, by doing this, the App will take you back to to main screen.
You will see a number (in a circle this is the number of data logs to upload) in the upper right corner of the "Quick Sync" button.
Tap the "Quick Sync" button, once.
You will get a "Sync Status" message saying that "You have successfully syncronized your logs.
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Click the OK button, you are done.