How can i change the game in German?
if I change the settings.exe, language in the game still in English.

There should be two solutions to this issue that you can find here ;) (it was for the french language, but it should be the same for german language)
Solution 1 : Modifying windows registry
Solution 2 : Modify folders
The two solutions worked perfectly for me so choose the one you prefer (and the two are easy to handle).
Hope it will work for you !

Thanks, it Works :)

Great :D
Remember to mark the answer who solved you question/problem as a solution, it will show that the thread is solved !
Have a nice game :)

Can't this be normal ? Unfortunately, I haven't played enough in french to say if it's normal or not, so I'm afraid I won't be able to help more :/

The support have created a patch for several months but they have still not emerged.
The info comes from the support in a response to my email