the mailchimp integration of the plugin doesn't works

Hi, i've used the right API key and subscription list requested, but the subscription doesn't run....

http://www.moveoutsport.it/magazine/quando-loutodoor-e-autentika-passione/

You can find the slide in in any page like this.

To check i used also another component in the footer with the same API and subscription list: it runs well.