I am trying to set Cartoon Network as a channel on my new Roku. Google says Cartoon Network has been available on Roku at least since September 2020 but it isn't in the channel search. Has Cartoon Network been removed?
Can you add it from here?
https://channelstore.roku.com/details/b2ac72eb2fe5e4ef76db9d97a5afc0bf/cartoon-network
If you don't see it when you go there, there might be a region/country issue.