No data in Germany?!

No forecast of the weather in Germany possible?
The App does not work, shows only :
(null)°C
High:(null)°C Low:(null)°C Humidity...
Visibility:(null)mi Wind:(null)mph

It is not possible to show the right data and also to make changes for kmh instead of mph!!!
PLS send me my money back

Zdrave about Live Weather Screen, v3.1.6