For some time now my API client fails to create a list via API according to the reference: https://developer.mailchimp.com/documentation/mailchimp/reference/lists/
Also, the example in the Getting Started documentation fails with the same status: https://developer.mailchimp.com/documentation/mailchimp/guides/get-started-with-mailchimp-api-3/
I get the following response and error:
{"type":"http://developer.mailchimp.com/documentation/mailchimp/guides/error-glossary/","title":"User action not permitted","status":403,"detail":"User does not have access to the requested operation","instance":"0995ebf7-f121-48d7-8cf5-2998a831206d"}
The API call to load (get) a list still works though. I also tried it with a newly generated API key but the result is the same.
Also, I get the same result when using the Playground: https://us20.api.mailchimp.com/playground/
I wasn't able to find an answer on the website. Can anybody give me a hint and help me out here?