[list_sermons] shortcode not working

Other shortcodes work on this page (http://renewedchristianfellowship.com/sermon-archive/) but the shortcode [list_sermons] does nothing. Actually, for that matter, none of the shortcodes for this plug-in work when inserted onto a page. Help, please!

Rachel

https://ww.wp.xz.cn/plugins/sermon-manager-for-wordpress/