Is that a typo in your statement are you saying that the plugins do work together?
Your statement is confusing.
We have found that they do not function together Mailchimp 360 only functions properly if and when "MailChimp Comment Optin" 360 is turned off.
I specifically tested this on a new install with no other plugins installed appart from those 2 and can confirm that they conflict.
Can you please clarify your statement and advise of appropriate action and a time line for resolution, even tho they are 3rd party plugins 360 is promoted by MailChimp and from what i understand was commissioned by Mailchimp if im not mistaken.
If this is the case would it not make it MC responsibility to make sure the plugin work appropriately.
Even if its not an MC plugin surly there must some duty of care or responsibility to make sure these plugins work before allowing them to be released and promoted on the MC website, a little like the Apple Apps Store all tested and verified before allowrd to be slod or used by the public?
Im just voicing an opinion here, please advise if im mistaken in any way.