Untitled

add_action('wp_head', 'custom_thankyou_page_script');
function custom_thankyou_page_script() {
    if (is_wc_endpoint_url('order-received')) {
        ?>
        <script type="text/javascript">
            document.addEventListener('DOMContentLoaded', function() {
                setTimeout(function(){
                	jQuery('#salesking_return_agent').click();
                }, 250);
            });
        </script>
        <?php
    }
}