Thanks for the tag. There are many reason why a channel is taken down. Check out this Help Center article on account terminations & see what you can do to appeal: https://yt.be/help/WX8p , Hope this helps!
Perhaps you're not able to read those in your server. If you would, i'll tweet them all here to you. Can you even at least send me a private file of all my videos in my suspended channel so that my data will not be lost for good? For my private posterity. Please! Thanks. <3