I had a WordPress webshop setup, and I am using the [MailChimp Framework plugin] for sending newsletter, among other things. Now, the setup has been running since January 1st, then all of the sudden the Mailchimp framework suddenly stopped sending. The "Everything's Chimpy" ping status does not appear as well, sometimes it's NULL, sometimes it's garbage character. I am pretty sure I haven't touched any code of the plugin, and a colleague having a totally different project has experienced it as well.
Also, I remember their reply used to be "text/json", but now I see a reply with Content-type "application/json".
Is any one of you experiencing this as well?
Update: Mailchimp API responded:
There seems to be a problem with connections being suddenly being dropped at mid-call. They have updated the MCAPI wrapper. I haven't tested this yet.