@pfefferle A question about the trouble shooting note in the instructions: "Make sure you've created and saved the template part in the Site Editor". Is the "Site Editor" this interface shown in the screenshot below (I get there via Appearance >Patterns)? I think it is, because part of the url says site-editor.php, but that's not obvious at all. And if it is the Site Editor, that's the saved template part above post_footer, right? Looks setup correctly?

@AdamStuartSmith yes! But it will only show up if the post you added it to has likes or shares. That said, it will not work on the frontage, only on singular posts.