That's weird, I will look into the logs and see what can be done. Thanks Raphmedia for reporting.

Using create by email gives me (in chrome network console) "account already exists" and trying to log with that account sends a call which is never answered. Perhaps it's the HN hug messing your website up...

You cannot create a new user by email currently. This is for already registered users who want to login only using their emails because they forgot the password or username or don't want to type them.

What about this here :

https://i.snag.gy/1jPRFW.jpg

Yes, this is the old way if you want to: (username + password + email), do you have a problem registering with this method also?

Yes. I get {message: "account already exists"} but when I try to connect with that account, I only get an error 400.