It seems like there’s an issue with the integration between BuddyPress and Mailchimp on your WordPress Membership Pro site. While Mailchimp updates work fine with Membership Pro, BuddyPress Group operations such as managing groups and adding members don’t trigger Mailchimp updates. The BuddyPress fields are configured correctly, but the updates aren’t firing on BuddyPress events. You may need to troubleshoot or seek support to resolve this integration issue effectively.