When creating a new contribution to your platform, e.g. a new campaign or purpose, you should be aware of the following:
Your contribution will only be available in the language that is selected in the back end while you are creating new content.
That means, your contribution will only appear in English if your selected back end language is English at the moment of its publication.
To generate a German contribution to your platform, you have to start with selecting German as your back end language. By clicking on language on the top right you can switch to your preferred language, e.g. select 'de' for German.