Trouble getting contributions approved

Hello, I've submitted several contributions for movies I was in. Sometimes they get approved, sometimes they don't. I have clear proof (contracts, reel footage, etc.) that I was in these fi;ms, and I'm getting pretty irritated they keep getting rejected. Could anyone provide any insight? They are primarily short form verticals. Is there a way to appeal a denial? Because I can tell you right now I'm going to keep submitted until they're on my page. I didn't go through all that hard work to not be credited. Thank you!