I've never had issues actually accessing the main page (haven't seen the error posted above), but I haven't been able to log into it for the past few weeks. Clicking the login link initially redirects me to login at the forums, and when I log in there it redirects me straight back to the non-logged-in main page. Clicking the login link on the main page after that does absolutely nothing (just redirects me back to the same page).
This issue has been preventing me from posting my One Piece translations for the past few weeks. I've tried multiple browsers and multiple devices (Safari, Firefox and Chrome on a MacBook Pro, and mobile Safari on my iPhone and iPad) and multiple internet connections (my home and mobile data connections) with no luck - the same thing happens in every case. I was able to login when I quickly tested it on my Windows machine at work, but it's not much use to me there (we're not really supposed to use our work machines for anything private…).
It occurred to me that the issue might have something to do with the recent Apple OS updates, but after looking into the specific dates, I'm pretty sure I had already upgraded to macOS Sierra when I made my last successful translation post (for One Piece 839 on Sept 23), so maybe they're unrelated.
Would really appreciate it if this issue could be fixed soon.