Issue with course press pulgin

The course page in our site is not showing anything as well as blog and dashboard page also, maybe there is any issue with the plugin. Please suggest us what needs to done, also we have granted the access, you can also check it by your end. Kind of whole menu bar is not working.
https://www.onlinebusiness.org/education/our_courses
https://www.onlinebusiness.org/education/category/blog/
https://www.onlinebusiness.org/education/courses-dashboard/