Just a quick update for iPhone/iPad/iPod users of the app. 

The app will occasionally take a while to load the data. Depending on the device this may take a couple of minutes. During this time your data will appear to be empty.
Normally, the app shows a little indicator while this is happening. I had it reported that on some devices this indicator isn’t displayed. This issue will be fixed for the next version.
In the meantime, I suggest to wait for a couple of minutes or so until the data show up.