I'm sorry registration on Reviewing the Kanji is currently unavailable. New account creation should be back within a few days hopefully.

One long standing issue with the website registrations is that two accounts are created during registration: one for this site, and one for the community forum.

This was always meant to be a convenience for new members, allowing them to participate in the forum, as well as post feedback without having to register a separate account. Registering both accounts at once, and disabling separate registration on the forum ensured that everyone can use the same account name between the main site and forum. To top it off, logging in this website would log you in the forums automatically, making it easier to log in and log out from the main site and forum.

Unfortunately this also creates limitations for the forum, one of which is that features such as email verification as well as IP bans for spammers are not effective during registration. In practice a lot of spam gets blocked when the bots/scripts try to post on the forum, but they still create hundreds, if not thousands of "dummy" inactive accounts on this site.

TLDR (Too Long Didn't Read): It's time to separate the main site and forum accounts. I think for many users this may in fact be what they would prefer. It may be beneficial for the forum activity as well, allowing people to register directly on the forum, whether they use this website or not.