MailChimp RSS Issue

Recently my clients RSS feed stopped automatically sending from MailChimp. Upon further investigation I found that after disabling CleanTalk the automated email sent out no problem. I verified I have “Check all post data” turned off. When I try to verify the feed url from https://validator.w3.org/feed/, it doesn’t validate with CleanTalk on, with it disabled it works fine. So I need to know how to allow MailChimp to see my feed in order for it to post automatically after a new post has been made.

The page I need help with: [log in to see the link]