Unfortunately, Roku is trying to get a better deal from Spectrum and had removed the Spectrum app from their channel store.
https://www.bloomberg.com/news/articles/2020-12-16/at-t-forges-deal-to-get-hbo-max-on-roku-after-lon...
"The fight over HBO Max was one of many that Roku has waged recently as its customer base grows and it tries to generate more revenue from selling ads inside streaming apps. In September, Comcast Corp.’s NBCUniversal reached a deal to have its Peacock streaming service carried on Roku after a monthslong dispute over sharing ad sales. This week, Roku blocked new downloads of Charter Communications Inc.’s Spectrum TV app from Roku’s online store."
