So, sorry for necroing this thread, the same has happened to me just now. Was working fine like a few minutes ago, and no when I go to ExHentai it's a full white blank page, ugh.
Edit: Welp, nevermind it works, I had to delete the cookies on ExH for it to work, but seemingly if I try to download from a torrent, the page then redirects me to a full blank page "crashing" or rather stopping the site entirely with a white blank page, I can fix this by deleting the cookies, yet the same happens. Seems like with torrents is only which this happens, but if I use a GP/Credit method for direct downloading it works fine.