Accessibility: Your instructor has the option to narrow the discussion board availability. Once the availability end date is past due, the forum will be hidden from students. If you would like to reopen the forum so you may post, please contact your instructor.
Display: In each forum, you have a Display filter, which can show all threads, published threads, hidden threads, and draft threads. Make sure to select Show All, so you will be able to view all threads created by other users in the course. Open the Displaying Threads tutorial to learn more.