Please try this PHP code snippet to manage the hp_listing
post type parameters. For example, it is possible to add a show_in_rest
parameter to this post type in this way. Also, this article could be helpful for you Adding REST API Support For Custom Content Types | REST API Handbook | WordPress Developer Resources. But please note that it can require further advanced customization. If you are not familiar with the code customization, then please consider hiring someone for custom work https://fvrr.co/32e7LvY
add_filter(
'hivepress/v1/post_types',
function( $post_types ) {
$post_types['listing']['show_in_rest'] = true;
return $post_types;
},
1000
);