Comment not displaying well

Hello, im using Responsive themes and i paste the code of wpdiscuz on the theme functions.php-> https://imgur.com/4Kh3y80

after that i paste the shortcode: “[wpdiscuz_comments]” and im using elementor
-> https://imgur.com/LRD7Uae

but the output display is not what i see on the wpdiscuz demo
here is the output on my site -> https://imgur.com/r30KTv6

and here the output on wpdiscuz demo -> https://imgur.com/JgtCNTc
can someone guide me how to install it

The page I need help with: [log in to see the link]