The WarCrown login screen takes your email address, not a separate game-account login. Use the email you registered with on the website + your account password.
If your email is correct but you still get disconnected immediately, your account is probably waiting on email verification — see the related article on the locked-for-security message.
If your email is correct but you still get disconnected immediately, your account is probably waiting on email verification — see the related article on the locked-for-security message.