You may have entered the wrong email address or password. Check that you have the correct email and that you know your password. If you have forgotten your password, you can reset it.
Can’t sign into Netflix with correct password?
1. You may have already used the incorrect email address or password. I suggest you to try again by changing your password if you have already created one.2. If you are using your email address for the first time, you may use the Signin form.3. You may need to select Try Again to verify or update your information.