Mailchimp Integration: Change in email not updating

Hi all, we’ve been using S2 since 16 (Pro) and had pretty good integration with Mailchimp - except for one thing: When one of our members changes their email address in their profile, it unsubscribes them from the Mailchimp list and doesn’t record their email. One of our admins has to manually go in and check whose email update has been ‘missed’ every three weeks or so. This is costing us a lot of $. Thoughts? A fix? Thanks in advance.

This plugin can synchronize the emails, and in both directions.