I learned today that Constant Contact no longer supports the Salesforce integration that allows you view email campaign history within a contact's record page in Salesforce, which is why we are now seeing error messages on many of our contacts pages. This area was incredibly useful as it showed what campaigns had been sent to the contact, and how many times they opened and clicked on links in the email all without having to leave Salesforce. None of the other Salesforce apps offered by CC appear to have this same functionality. I don't understand why you would get rid of this, it was a huge time save! Please consider supporting this functionality again.