WordPress Membership Plugin
This issue is resolved.
The issue was with the address field set in Mailchimp itself.
Yes I did this.
But I do not understand the troubleshooting portion.
The common failures that are listed are not the cause because I have already accounted for those.
Yesterday API calls were being made but resulted in an error, today there are no API calls being registered.
Thanks for your response, I just received a response from Paid Support so I will try out their suggestion.
Thanks The Assurer,