Have you tried signing up with an @yandex.com email? The signup page just reloads with this message: 1 error prohibited this user from being saved: Email is no

Have you tried signing up with an @yandex.com email? The signup page just reloads with this message: 1 error prohibited this user from being saved: Email is not from an allowed domain. You don't need to have a Yandex account for that. Just put in whatever@yandex.com as your email and you get the above message.