Are you trying to sign in to the NBC Sports app or the Spectrum TV app while away from your home network? Most channels are not available on the Spectrum TV app while away.
The Spectrum TV "Channel" through the Roku is available in home only.
The partner apps do not have that restriction.
If you are still having this issue I would encourage you to contact us for direct
Spectrum-Social Media Customer Care
Lead Moderator-Community Forums