If you're having trouble creating a new account, it's probably because you've already used that email address for another ClassDojo account. If you already have a parent or teacher account with that email, you'll need to use a different email address for your new account.
Not sure if you have an account with that email? No worries! You can try resetting your password here.
Want to use the same email for a new account? You can delete the existing account and start fresh.