Hm, if it was previously allowed and your game name relies on it, which I can see it does, then it could be valid.
I’ve seen some other devs have a similar issue with recent filter changes so I’ll mention some engineers who might be able to help: @RacquetBaller@akssoggywall
ROBLOX added youtube as part of the filter a bit ago. Try to use other words to replace it. You could try something like Video Star Simulator, or Video Celebrity Simulator or something like that. Nothing you can really do to bypass the filter, as it might result in a ban.