I updated an article today and wanted to add it to the Discovery Feed. I clicked the button, got the green success message, but the article never appeared in the feed. I tried again an hour or so later to the same result.   The article I'm trying to add is Chun-zhuang, which I previously put on the Discovery Feed about three weeks ago (early SC). The last article I had on the Discovery Feed was three days ago.   Two others have helped me with troubleshooting. One person was able to add a new article to the feed without issue. A second person was unable to add an article that had previously been on the feed, the same as me.