help with hustle plugin

I use Getresponse and I installed the Hustle plugin on my website and I set up Popup and Under the content form, and when I insert an email address for a test on this forms, it's simply doesnt subsribe the email I inserted into my Getresponse email. and of course It doesnt send an auto email of my autoresponder of the list.
I did varified the API key of getresponse. and I made sure its in the right list.