January 21, 2022
My apologies to anyone who's tried to register a new account in January. It looks like there's been some kind of bug in the e-mail system on the server. When you sign up, it's supposed to send a confirmation e-mail to the address you've entered. Something in the e-mail system is breaking, so the e-mail never gets sent. I only noticed this today but it looks like it's been happening for a week or so.
I'll keep looking into it over the weekend, but I wanted to say sorry to anyone who tried to make an account but wasn't able to. I'll try and get this fixed as soon as I can!
January 23 update
I think I've fixed it now! It turns out it was a bug in the latest version of Ruby on Rails (which you can read about here if you really want to get into the weeds) that caused the web server to forget how to talk to the e-mail service.
If you've made an account and never received the confirmation e-mail, try visiting this page to make the server send it again. If your e-mail address isn't recognized, try signing up again with that e-mail address.
Sorry that this is such a pain! Please get in touch if this or anything else breaks!