I have no audio for NBC channel 512 on Spectrum app. This is the case on all 4 rokus in my house. I have tried reloading app and Spectrum worked on this issue for a week and then said it was likely an issue with roku. Spectrum thought it might be language setting on the NBC channel but when I hit the * key on that channel it is set to default and provides no other options. Audio works on all other Spectrum channels and all other roku apps.