Open a topic in bbpress.org?

Currently facing a problem with bbpress not able to display topic replies at the front-end. Here is the link https://campuseye.ug/forums/forumtopic/when-are-exams-at-muk Suspect it’s a theme compatibility issue with bbpress but seems can’t start a topic at bbpress.org forums yet as of now, all the solutions came across don’t work for me. Anyone have an idea? Much thanks