Sorry for not getting back to you. I did not see your response until today. I will ask my developer to look at what you suggested.
I tried revoking the old API and creating a new API. I add the the new API to the plugin. I get the same result.
This is the error from the debug log.
[2023-03-22 17:32:59] ERROR: Form 515 > Mailchimp API error: 404 Not Found. Resource Not Found. The requested resource could not be found.
Request:
POST https://us8.api.mailchimp.com/3.0/lists/Sturges-Young Center for the Arts/members
{“status”:”pending”,”email_address”:”brie*@fo********.co”,”interests”:{},”merge_fields”:{},”email_type”:”html”,”ip_signup”:”152.117.79.106″,”tags”:[]}
Response:
404 Not Found
{“type”:”https://mailchimp.com/developer/marketing/docs/errors/”,”title”:”Resource Not Found”,”status”:404,”detail”:”The requested resource could not be found.”,”instance”:”a5565b00-63bc-21dd-551c-87acd8c78f12″}