Subscribers arent showing in Mailchimp listing

Hi guys,

Big fan or your plugin, keep up the good work. Since a few weeks im having some problems with the ‘Contact Form 7 MailChimp Extension’ plugin. Before that everything worked fine. When subscribers on my page complete the contact form 7 questions (and succesfully download a businessplan example in my case), the contacts arent transfered to the Mailchimp list. I already checked the API and List ID, everything seems fine, but the subscribers aren’t added to the list.

Any idea how i can solve this?

The page I need help with: [log in to see the link]