How new is your account? It's possible that it takes a few days for all the account details to sync with the online portal.
Have you checked out this link?
Remote access to Spectrum Account/TV/DVR/Internet and Voice (Phone) service generally takes between 48-72 hours for new subscribers.
What Spectrum services do you have?
Curious....Based on the link James posted...are you a brand new Spectrum customer or you recently moved or updated services and was a Spectrum customer previously?
We were unable to retrieve your account information and apologize for the inconvenience.