1) Did you set a contact page for each language? Switch the admin page language with the language switcher at the top and you’ll notice that the Enfold option page caption changes (i.e. to Enfold (EN) and Enfold(DE), etc.). Enfold creates a different option set for each language and you need to make sure that the right contact form page is selected for all languages.
2) Can you post a link to the cart page please? Did you try to translate the po/mo files with Codestyling and do you use woocommerce-multilingual?