Mailchimp set up with Webflow

Hello, I’ve been trying to set up a new letter sign up with Webflow + Mailchimp however when ever I go to:

Mailchimp > Embedded forms > copy HTML line

Add it to the form block action sections, set to POST and have the fields names match the ones in Mailchimp with the saved published to the website I can’t seem to get the integration to work.

Website link