Apparently even if you buy a Roku just for the app it still doesn't work if you're not using Spectrum for Internet which I never would. I didn't mind TWC limiting the channels I could see because it looked like I was "away from home" even when I wasn't, but the Roku app says it won't work at all if not hooked up to the Spectrum provided internet account.
Ridiculous. Can you provide a valid reason why you don't support FireStick and only support ROKU? So many people have Amazon Prime and FireSticks and you are screwing yourself by this. I've had so many bad experiences with Spectrum; I have been a customer for 15+ years and find that I will probably have to leave Spectrum and go to a different provider which I really HATE to do.
I have the spectrum TV app sideloaded on my fire stick. Download "App to fire" on your Android device. Then download the spectrum app. Open App to Fire, choose Spectrum TV,,,, open app with fire stick. Enjoy
Only issue I've had is due to screen ratio easily fixed. Pm a 👍if this worked for u. If it didn't, I can help.
Sideloading appears to work (somewhat) for FIresticks but does not work for Fire TV (boxes.) Fire TV boxes are told to unplug the HDMI cable before the app will work.