Hi @APellizzaro, thanks for your post, the field names in Webflow form and the merge fields in the Mailchimp list in Mailchimp need to be the same name, it would help if you can take a screenshot of the field names/merge field names in your mailchimp list in mailchimp to compare how those are set.
Hi @APellizzaro, thanks for your reply, I am not certain where the checkbox you mention is located, could you help to share which published page link and which form field? If you can help to take a screenshot that will help.