BizMailChimp Dynamics CRM & Mailchimp Integration Tool v1.0 uses PerceptiveMCAPI Wrapper to connect Mailchimp API (version 1.3). But users who have API Keys ends with -us10 cannot connect and gets “Invalid API Key…” issue. This is generated by PerceptiveMCAPI and they don’t support us10 connectivity as stated https://perceptivemcapi.codeplex.com/workitem/7949 anymore.
As we already developed the new version of Dynamics CRM&Mailchimp Integration Tool and called BizMailChimp
Users can download and install the latest version to solve this issue.