Update order status automatic after ipn complete

hi,
i install the paypal IPN plugin, and do all settings.
paypal get status code 200 and the plugin in my site show the complete IPN status.

how can i automaticly update the order status in WC order list.
I try to update the Functions.php with this code:

function get_paypal_order($raw_custom) {
        $custom = json_decode($raw_custom);
        if ($custom && is_object($custom)) {
            $order_id = $custom->order_id;
            $order_key = $custom->order_key;
        } else {
            return false;
        }
        $order = wc_get_order($order_id);
        if (!$order) {
            $order_id = wc_get_order_id_by_order_key($order_key);
            $order = wc_get_order($order_id);
        }
        if (!$order || $order->get_order_key() !== $order_key) {
            return false;
        }
        return $order;
    }
 
    function update_wc_order_status($posted) {
        $order = !empty($posted['custom']) ? get_paypal_order($posted['custom']) : false;
        if ($order) {
            $posted['payment_status'] = strtolower($posted['payment_status']);
            if ('completed' === $posted['payment_status']) {
                $order->add_order_note(__('IPN payment completed', ''));
                $order->payment_complete(!empty($posted['txn_id']) ? wc_clean($posted['txn_id']) : '' );
            }
        }
    }
 
    add_action('paypal_ipn_for_wordpress_payment_status_completed', 'update_wc_order_status', 10, 1);

but, some issue apper on my top Dashboard with the function text…