I just purchased a Roku Premier to resolve issues with the local channels not showing too many times. I had the same issue this morning 10/30 and Googled the problem. Going back to the home screen on the Roku and back to the Spectrum app fixed the bug. Other options were to re-boot the Roku or remove the app and add again.
Mine has been out for 5 days now. Get the same something is not right message try again later. All my other Roku apps work and my connection is strong. Also have tried to close and reopen the Spectrum app and remove and reinstall app and still get nothing.