Hi there. We have this plugin installed on our site, and everything seems to work great about it, except that we aren't receiving emails at MailChimp once someone has signed up? Or maybe a better explanation is, the people signing up don't seem to be receiving the confirmation email to "confirm" their subscription. We know for certain the email address we used to "test" this was not already in the email list, and we double-checked the API key and List user ID. We have also checked the spam folder, and the confirmation email was not in there either.
We have also looked in the forum for other problems similar to this, but none seem to have helped. We even waited an hour for the confirmation email to come through, but nothing came.
Any other reasons why this wouldn't be working properly? Any help is greatly appreciated...thanks!