If your plugin was communicating with mailchimp correctly I would expect mailchimp to be sending me those emails. Anyways, I’m dumping your plugin since it clearly doesn’t work.
I don’t think email delivery is the issue because I do get the confirmation email if I turn off double opt in. Nothing in spam folder. This has been broken long enough that I don’t think the issue is with mailchimp. I think they would have fixed it by now. I have tried multiple email addresses
I just installed the plugin and double opt in isn’t working. If I set double opt-in to No then it works but with double opt in turned on I never receive the confirmation email.
I can’t give you the url since this site is in development