I use now since years the combination of GravityForms and MailChimp with the MailChimp plugin without any problems. Since now more than 3 weeks I have seen many subscribers not confirming the subscription and realize that something is not working. I have now controlled all settings, made a all new API, turned off/on the plugins, made all connections to MailChimp plugin new in back-end, but still it is NOT working anymore.
On this site I have more than 10 different forms, all with the MailChimp integrated, here the simple Newsletter form: http://hardthaus.de/kontakt/newsletter/
The problem is that I get no response from MailChimp at all, NO CONNECTION somehow?
I have turned of all Plugins and still no response from MailChimp!
I have found this Topic: http://www.gravityhelp.com/forums/topic/data-not-sent-to-mailchimp
If you are absolutely sure it is not working I would suggest doing the following...
- Make sure you are running the latest version of the MailChimp Add-On.
- Edit your MailChimp Feed and re-save it.
- Test again.
If it still doesn't work... post your own support request on this issue and someone on the support team can assist you after you have done the above.