Unable to set child on custom post type

function cptui_register_my_cpts_specials() {

/**
* Post Type: Specials.
*/

$labels = [
“name” => __( “Specials”, “hello-elementor-child” ),
“singular_name” => __( “Special”, “hello-elementor-child” ),
];

$args = [
“label” => __( “Specials”, “hello-elementor-child” ),
“labels” => $labels,
“description” => “”,
“public” => true,
“publicly_queryable” => true,
“show_ui” => true,
“show_in_rest” => true,
“rest_base” => “”,
“rest_controller_class” => “WP_REST_Posts_Controller”,
“has_archive” => false,
“show_in_menu” => true,
“show_in_nav_menus” => true,
“delete_with_user” => false,
“exclude_from_search” => false,
“capability_type” => “post”,
“map_meta_cap” => true,
“hierarchical” => true,
“rewrite” => [ “slug” => “/”, “with_front” => true ],
“query_var” => true,
“menu_icon” => “https://bictontravel.wpengine.com/wp-content/uploads/2020/07/Money-Bag_White_3.png”,
“supports” => [ “title”, “editor”, “thumbnail”, “page-attributes” ],
];

register_post_type( “specials”, $args );
}

add_action( ‘init’, ‘cptui_register_my_cpts_specials’ );

Just to be certain, do you have more than 1 post drafted/published? It’s not going to show the dropdown till you have at least 2 to work with.

Yea there are over 50 posts

Is any of the “page attributes” metabox showing? With my testing it was showing the post order input, but that’s it.

Beyond that, I wasn’t able to recreate an issue.