Hi Stefan,
when using a date field in a CRED form it will display in the language of the page he is in. For example if in a dutch page it would display in dutch the same for english.
Currently CRED doesn't have options for choosing the language of a particular field displayed in a form.
@Thomas, could you open a new ticket so we can help you there and describe a bit more the problem your having?. Thanks.
Please let me know if you are satisfied with my answer and if I can help you with any other questions you might have.
Regards,
Ana