If the Watch on TV option isn't available, the program can't be sent to your Spectrum Receiver. Not all programs are available to watch on TV from the Spectrum TV app.
Before selecting Watch on TV, ensure that the Spectrum Receiver you wish to send the program to is selected in Devices.
TV Mirroring Troubleshooting
When using Android Cast or Apple Airplay, confirm your devices are connected to your In-home WiFi network and try again. TV mirroring only works when your mobile device and TV are connected to the same In-home WiFi network.
Ensure the device you're using meets the minimum requirements for TV mirroring. Learn more.