levijackson

It may not be the best way, but I had achieved something similar like this

$subscriptionHelper = YWSBS_Subscription_Helper::get_instance();
$users = get_users(['role' => 'customer']);

foreach ($users as $user) {
    $subscriptionPosts = $subscriptionHelper->get_subscriptions_by_user($user->ID);
    $expiration = null;
    foreach ($subscriptionPosts as $subscriptionPost) {
        $subscriptionInfo = get_post_meta($subscriptionPost->ID);
        // check $subscriptionInfo['payment_due_date'][0] to see if it is after today's date
    }
}