The POP settings for Spectrum Webmail have been given here. If you mess with the settings, a lot of things can go wrong. So make sure that everything is as it is mentioned here. The user username should be your full email address, and the server hostname has to be mail.twc.com. The authentication should be done via password. If you have any other doubts regarding spectrum pop email settings, you can always go to the official website and ask the customer service team to help you.