Dear MS,
My Mailchimp service dataset is not connecting. It's failing at the API handshake bit. This is what Mailchimp had to say when I raised it with them:
"I’m not aware of any issues from MailChimp’s end. I do know that in December MailChimp now supports API 3.0 exclusively and all other versions of the API have been retired and are no longer supported. The time frame of when you started seeing interruptions to me sounds like the integration is using an old version and that may be the reason why you’re seeing issues. So I would definitely reach out to the developers to inquire about that and see if they have any insight."
Can you please advise?