It's happened again
@YouTube has deleted videos off our channel with no explanation or reason
My favourite stream (Sea Of Thieves) is no longer available to watch, and I have no back up because Twitch only saves for 30 days
What a crock of shit 
Sorry about the confusion. To know better when videos are taken down by YouTube and the steps that you can take to avoid/counter it, you can refer to this article: https://goo.gl/MdQDHm . Hope this clarifies.