Hi @dannhanks
Could you please debug some variables for me? Please try this code and let me know the result:
global $post;
$post_ID = $post->ID;
echo "<pre>";
echo "=== post id ===\n";
var_dump($post_ID);
echo "=== repetaer without id ===\n";
get_field('excerpt');
echo "=== repetaer with id ===\n";
get_field('excerpt', $post_ID);
echo "</pre>";
Thanks 🙂