No reply area for my students to post to a discussion

I created a discussion, checked dates, checked that the discussion was for everyone in my course,  saved and published.  Students are inboxing me  saying they don't see an area to repl...

How to get rid of Media Not Found box

I deleted a video I made in Studio from my Front Page. Now there is a big gray box where the video had been that says, "Media Not Found." How do I get ride of this big ugly box?