Popup not working properly in boxilla

Hi there. Just installed Boxilla as per your recommendation. Pls go see my site:
ericadiamond.com. There is nowhere coming up that allows reader to enter email address and click subscribe, and finally, when I get that working, it must talk to my mailchimp list (I have the MC4WP working and connected).
Can you help me finish my popup properly with the subscribe button working and then adding those email addresses to my mailchimp account?

I used the popup code from mailchimp plus regular text.

Thanks!