The email is succesfully sent to mailchimp, that part works. But when I type in my email on the website and hit send, as a user of the site, I don't get any feedback.
Like when you send a mail through the contact for, it displays a little message under the title. It doesn't display any message when you subscribe.
So as a user, I fill out my email address and hit send to subscribe, but absolutely nothing happens visually. (Even though in the background it works)