I wrote a post about how Exit Tunes is ignoring copyright intent and illegally taking down videos that they didn't have original involvement in. It's because things like "youtube red" policy isn't accepted by exit tunes, but unless brands like exit tunes or honeyworks gets the proper contract or intent from the artist, it's still illegal. I don't have any lawyers to address it, but the best thing to do is just post the videos on NND and not youtube.
This could also be that a lot of Honeyworks videos are not avaliable overseas on Youtube and My Idol, Declaration may have been one of them. I cannot say 100% as I do not get this problem myself but many overseas friends have