Not working for me, either.
Like some others, here, Chimport isn’t working for me.
Yes, I have the API key, which I’ve entered. I select the contacts to be exported, confirm that they’ve opted in, then I initiate the transfer. I get a window that asks, “Are you sure? You’re about to export n contacts to MailChimp. I confirm the choice, and then I wait. Several seconds later, the app appears to return to its default state.
But when I check Mailchimp, NOTHING has been imported. I’ve tried this several times, including logging out and back into both Chimport and Mailchimp, but nothing ever gets imported. I’m not a novice. It simply seems to fail to work.
BTW i have almost 4,000 contacts in Address Book. I wonder if the others for whom the app’s not working might also have large contact lists. (Large for an individual, that is.)
behind the mask about MailChimp Import