Form fields not showing on custom post type

Hello,
I’ve got the form to submit custom fields like ‘mobile’, ’email’, etc.
I can see them in the submissions. When I review and approve them I see the new page in the custom post type (Clients) menu in WordPress admin but the custom fields aren’t showing.

Do I need to do something with the ‘supports’ in the register_post_type array?

add_action( ‘init’, ‘clients_post_type’ );
function clients_post_type() {

register_post_type( ‘clients’, array(
‘labels’ => array(
‘name’ => __(‘Clients’),
‘singular_name’ => __(‘Client’),
‘add_new_item’ => __(‘Add New Client’),
‘edit_item’ => __(‘Edit Client’),
‘new_item’ => __(‘New Client’),
‘view_item’ => __(‘View Client’),
‘search_items’ => __(‘Search Clients’),
‘not_found’ => __(‘No Client Found’),
‘not_found_in_trash’ => __(‘No clients found in Trash’)
),

‘description’ => ‘Represents a single Client in the header clientshow.’,
‘hierarchical’ => false,
‘menu_icon’ => ‘dashicons-images-alt2’,
‘menu_position’ => 2,
‘public’ => true,
‘exclude_from_search’ => true,
‘publicly_queryable’ => false,
‘rewrite’ => array( ‘slug’ => ‘clients’, ‘with_front’ => false ),
‘show_in_admin_bar’ => false,
‘show_in_nav_menus’ => true,
‘show_ui’ => true,
‘capability_type’ => ‘post’,
‘supports’ => array( ‘title’, ‘editor’, ‘thumbnail’, ‘excerpt’, ‘comments’, ‘custom-fields’, ‘post-formats’, ‘page-attributes’, ‘mobile’, ’email’),
));
}

Many thanks for any help.