thomassettle

I also confirmed the API Key is valid using the mailchimp API PHP class as defined here: https://www.inkthemes.com/learn-how-to-use-mailchimp-api-in-wordpress-plugin/

<?php
require_once 'MCAPI.class.php';
$apikey='xxxxxxxxxxxxxxxxxxxxxxx'; // Enter your MailChimp API key here
$api = new MCAPI($apikey);
$retval = $api->lists();
foreach ($retval['data'] as $list){
echo $list['name']; echo "&nbsp"; echo "&nbsp"; echo "&nbsp"; echo "&nbasp"; echo "&nbsp";
echo $list['id'];
echo "<br />";
}
?>