Featured Image/ Map shortcode

Hello,

My theme is using the usual wordpress featured image on the top of the page, posts but the option for featured image does’n’t appear on the backoffice for directorist post, also in screen option. I tried to add add_theme_support( ‘post-thumbnails’,array(‘at_biz_dir’)); in my function.php. How can I do please?
Also, my map is working well on every listing but the shortcode [directorist_search_result_map] is not working.

Please, let me know.

Regards,
V