Hi!
For some reason the widget capitalizes each word from the headline. Could someone help out as to why?
I think this comes from your theme CSS code. Please leave some URL to allow us debug the CSS.
This is not wpDiscuz addon issue, this CSS code comes from the theme or form other plugin. Please navigate to Dashboard > Comments > Settings > Styling admin page, put this CSS code in Custom CSS Code textarea, save it, delete all caches and do Ctrl+F5 on front-end:
#widget-comments-container .wpdiscuz-widget-comment .wpdiscuz-widget-comment-content p.wpdiscuz-widget-comment-title {
text-transform: none!important;
}