there On coursepress activate, I'm not seeing any topics

hi there
On coursepress activate, I'm not seeing any topics listed at all in bbpress.
If coursepress pro not activate, then i see topic list.
How can i fix it?

example: seoschool.co.kr/forums

bbpress 2.5.8
coursepress pro 1.2.6.6
theme: twentyfifteen,coursepress,avada & another host ... all tested but same conflict..