This theme has no available custom post templates.

I have created a single-recipes.php file:

<?php
/*
Template Name Posts: Recipes Post
*/
?>

<?php get_header(); ?>

<section id="primary">

	<?php if ( have_posts() ) while ( have_posts() ) : the_post(); ?>

		<?php  get_template_part( 'content', 'recipes' ); ?>

		<?php albedo_content_nav( 'nav-below' ); ?>

		<?php // comments_template( '', true ); ?>

	<?php endwhile; // end of the loop. ?>

</section><!-- #primary -->

<?php get_footer(); ?>

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and a content-recipes.php file which is the post template and I’m still getting the “This theme has no available custom post templates.” message in the Edit dropdown.
Any idea what I’m doing wrong?
Thanks

https://www.ads-software.com/extend/plugins/custom-post-template/