Since last update not usable anymore.

Update Version 4.5.1:

Most issues seem to be fixed.
Now its a good app to monitor your data usage again!
Thank you!

Version 4.5:
This app was very useful, it worked for many months without any problem, just until the latest update.

Most relevant features stopped working. Here are just a few examples:
WiFi and Cellular usage showed the same data. The data appeared to be invalid for neither. The indicators on the top (e.g. the graph indicating how many percent of the total amount were already used) were all blank.

I tried to reinstall the app. Without success. The same problems remain and another one appeared, the Apps icon was replaced by what is displayed once the app started.

If the app worked, Id give at least 4 stars of not even 5. But the version, as it is right now, is simply useless.

I hope these issues will be fixed.

SK Martin about Data Usage Pro, v4.5.1