Unable to integrate with Mail Chimp

In the Match Your Fields category, it won't allow me to select an e-mail address or Add a New Field. How do I fix this? 

I just checked your form and it seems like your form is empty. You will need to add an email field to your form to be able to select it. 

For more information, please see the guide below:

How-to-Integrate-with-MailChimp