I'm running GF 1.5.rc2.1 and MailChimp add-on ver 1.3.1 on my site, http://www.johnmurray-realtor.com.
I set-up the MailChimp add-on and added my API key, which was recognized. I think the API is working because when I configure the MC feed, it recognizes my list name. I have tried all settings for the Opt-in configuration, especially the simplest case, where it is disabled.
However, after configuring the feed and making a form submission using a very simple form, no contacts appear on my MC list. I tried creating a 2nd MC list and configuring a feed to that list, and still nothing. I waited overnight, in case there was a problem with MC.
Is this an issue with the 1.5 RC or is it something I might be doing wrong?