Code for single.php

We use your Starbox Pro at the website https://www.dehippevegetarier.nl/

Now we want to paste a code in the single.php instead of using the auto-insert at the options.

I found the code below

<?php
global $post;
$author = get_userdata($post->post_author);

echo starBoxShow( $author->ID ); ?>

This IS showing the Starbox, but i get them twice.

As soon as i deactivate the option (in Starbox Settings) Load Starbox in (POSTS) they ar both gone!

Hope you can help, what code should i use in the singele.php to show the Starbox?

https://www.ads-software.com/plugins/starbox/