equilibriumx
First of all, this kind of custom Facebook button that you add additionally for template, not the default one that template supports so please be clear that it's not issue of template.
For the facebook js file, as I can see that there are 2 files calling them:
/templates/gk_msocial/layouts/default.php
<script async defer crossorigin="anonymous" src="https://connect.facebook.net/en_US/sdk.js#xfbml=1&version=v6.0&appId=2290846157669510&autoLogAppEvents=1"></script>
and the social block you already mentioned:
/templates/gk_msocial/layouts/blocks/social.php
e.src = document.location.protocol + '//connect.facebook.net/<?php echo $this->API->get('fb_lang', 'en_US'); ?>/all.js';
You can contact them for how to customize it as you wish.
Regards