I get a MailChimp error. How to solve it?
The most common errors refer to the First Name and Last Name subfields. FNAME must be provided – Please enter a value and LNAME must be provided – Please enter a value indicate that the field associations involving these subfields (First and Last Name) haven’t been set up correctly.
Go to your Settings → 3rd Party Apps and, in the customization box, check or establish the correct field associations.