DGE-1001 is an authentication error and as suggested by @MsRaye, changing the password used to access the app should resolve the issue. In some cases, you may also need to change the username. You can manage your username and password by logging into your My Account and selecting "My Profile". Please allow 15 minutes for the password change to propagate the network and take effect. You may need to also restart your modem. If you need further assistance, let us know. You can also reach us on social media.
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Spectrum Social Media Customer Care
Forums Community Manager
Actually Spectrum does advertise that their service includes the ability to use their service through multiple devices using the home spectrum wifi through their app. So it is part of the package and included in the billing for the contracted service. In fact I just received an email from spectrum featuring the app even though they are now aware it no longer works. Sounds like fraud to me.