Hi guys,

I have a multisite install, I updated the mailchimp sync plugin to the latest version and I get a message:

“Mailchimp API has been updated. These change affects to groups references. Please, click here to set the groups again. “

but when I go to set the group / mailing list, I can only see 10 of may mailing lists (I have about 15-20 in total), so I can’t choose the one I want to sync since it’s not in the list.

Note: please refer to this previous ticket, it could be relevant in finding the fix:


  • James Morris
    • WordPress Enthusiast

    Hello petru,

    I hope you are well today.

    I’ve taken a look at the other thread you posted. The patch supplied there is no longer applicable with the current version of MailChimp Integration. I need to contact the developer to get their feedback on this issue. An update will be posted here as soon as possible.

    Best regards,

    James Morris

  • Ignacio
    • HummingBird

    Hi petru

    First of all, Upgrade your MailChimp plugin to 1.9.3.

    Then add this code to your theme or add a new mu-plugin for that:

    add_filter( 'mailchimp_api_request_args', 'petru_mailchimp_api_lists_limit', 10, 3 );
    function petru_mailchimp_api_lists_limit( $args, $path, $request_args ) {
    if ( 'lists' === $path && 'GET' === $request_args['method'] ) {
    $args['count'] = 20;
    return $args;

    That will return 20 lists max.



Thank NAME, for their help.

Let NAME know exactly why they deserved these points.

Gift a custom amount of points.