Trying to add Jon Stewart in the cast for The Hunting Ground when there is proof, but it won't let me.

Hey after I read the movie connections to the documnatary film "The Hunting Ground" at https://www.imdb.com/title/tt4185572/movieconnections/?ref_=tt_dyk_cnn and saw they had a clip from the Daily Show with Jon Stewart. Which got me to add Jon Stewart in the cast of the film as archive footage when there is proof of it, but it won't let me. Here is my current submission at https://contribute.imdb.com/updates/update?load=250929-215045-887000 and my old ones that got rejected at https://contribute.imdb.com/updates/update?load=250927-001209-854000 and https://contribute.imdb.com/updates/update?load=250924-173204-480000. Let me know if you can uploaded it or if not what is it I am missing please.