Mailchimp integration when exporting site

I have made a mailchimp integration capturing emails with no problem when published inside webflow https://joystream.webflow.io/ (see bottom on “Get Notified”)

But when I export the code (I need it in a non-webflow server) I enter an email and gives the me “Thank you! Your submission has been received!” (I didnt get that on the Webflow preview) and no integration

How can I solve this?

UPDATE: As I need to publish this ASAP I replaced the form with a single button, but please hemlp me with this ASAP

Any idea on this?
Is the mailchimp integration gone when the site is exported?

Do you still need help with this?