The Spectrum TV app is giving the error, so Spectrum should be able to help you diagnose it.
xFE-1004 is listed as “Check Connection”, where the first letter stands for a specific device; probably ‘A’ for Apple TV box.
It probably means that the app suspects that it isn’t connected to the internet.
If other apps connect to internet just fine, then reset the app:
- Force-quit the app, then relaunch and try again.
- If the issue persists, force-quit the app, restart the device, then relaunch and try again.
- If the issue still persists, delete the app, re-download and try again.
- If the issue still persists, then you did all you could, and then Spectrum will have to fix their app.