The username minimum length is 5 characters and cannot contain anything other than letters and numbers.
**If you are still getting an error, then you might be using any reserved word which is not allowed as a username. Please use another word in your username!

Password must have minimum 8 characters, at least one letter, at least one number, and at least one special character
e.g. `!\s@#$%^&*()_+\-=\[\];':"\\|,.<>\/?~