Hi lucachen,

Thanks for reaching to us.

First of all, take my apologies for the delay in answering because of the weekend.

Please navigate to MC4WP > Form to create new subscription form https://prnt.sc/USNEvZ1W6ttw. Then, inside the page > add MailChimp widget and select subscription forms.

Please refer to documentation article https://xtemos.com/docs-topic/how-to-add-mailchimp-signup-form/

Regards,