Hey, you need to include first this js to your theme:
download it and move it to your inc/js/ folder:
https://themeofwp.com/deluxe/wp-content/themes/deluxe/js/mobilemenu/jquery.mobilemenu.js?ver=1.0
and include it via :
wp_enqueue_script( 'mobilemenu', get_template_directory_uri().'/inc/js/jquery.mobilemenu.js', array('jquery'), '1.0', true);
and
open the cosmos/inc/j/framework.js and paste apropriate line:
/* Responsive Menu Translation */
$('#main').mobileMenu();
you menu will be like deluxe theme.
King Regards and Sorry for delay.
ThemeofWP.com Team