Because it was there that day I added the response but not on the day I make the weekly post. Somehow it disappeared. I do not understand either, but if I can't see it the feed I can"t add it to that post.
Please be sure to add a link to your post to the contest post and I will double check that post for entries to avoid that happening in the future.
You are aware that last week Steemit was down for several days and many posts did not go through. We did the best we could do in that situation.
Again, I apologize and will do the best I can going forward.