Yes, Adam Uni page has been taken down, but he managed to sub this episode and florbexter uploaded it on google drive. Here is the masterpost on her tumblr with links to all episodes:

https://florbexter.tumblr.com/post/183744290450/history-3-trapped-masterpost-bookmark-the

And there is another website that did back-up subs before, so fingers crossed they will sub the last 5 episodes:

http://gcinee.com/history-03-trap/