This is happening a lot at the moment. You can often get them back by posting a reply of your own (I just post a full stop) and then deleting.

Fixed the glitch! You should see it now. Sorry about that and thanks for bringing to our attention.

Hi everyone! I'm looking into it and will let you know. I see what you're all saying now :)

Hi there! There are lots of comments there. A few were deleted because they were blank and spam. Are you not seeing any?

It says that there are 44 comments but I don't see any.

I was looking at a discussion thread yesterday that said it had 30 comments and one hidden one, but I couldn't see any of them. If I can find it I'll post a link here in the hopes that it might help the all powerful Duo-wizards figure out what's going wrong. For the record, I looked at that other discussion thread with Safari on a Macbook, and with Chrome and IE on Windows. So it's not a browser issue, doesn't look like.

Here it is: https://www.duolingo.com/comment/2149349

I added a comment with a full stop (period) and then deleted it. It made the comments visible to me, like Luscinda said it would.

I can't see comments in my app for android but I can see them in the computer version. I am doing French. Merci