aplogies for this inconsistency .We have migrated our forums to new server .
About the shortcodes problem : Yes shortcodes support is not available in app right now .We are planning to support shortcodes in app .thinking of a strategy how to support all shortcodes .
about this issue : https://i.hizliresim.com/YOLbjj.jpg
Please clear the application storage in browser ,make sure that you have featured courses from wp-admin => lms -> all courses .