How to change language?

Unfortunately I cannot change the language in the settings menu to any other than english. Is this a bug or is there a wayto do so? If I select a language and press save it does not change the language.

Thank you, 

Marco

It can take a little bit for the change to be effective. After you save, close your browser and go back to the Dashboard in 5 min. - it should now be in your selected language.