I hope this is the correct place to file a bug report since I can’t speak German.
The Dutch version in not usable due to a nasty bug. It is still present in the newest december update.
When you try to change the date range in one of the Chart sections I encounter a bug reading:
„unknown format type: nummer“
In think somebody translated some of the backend code?
„nummer“ is Dutch for „number“ of course.
Hope somebody reads this. I would love to use the program in Dutch but I can’t!