Thanks for the post.
To toggle closed captions through Roku, you can go to Settings > Accessibility > Captions.
For more detailed information about closed captions, visit our Support page here: How do I enable closed captioning?
If you need further assistance with controlling features and functionality specifically with the Spectrum channel,
you'll want to contact Spectrum support directly to inquire further. Many channels on Roku are developed and maintained by the channel provider themselves.
You can reach Spectrum support here: https://www.spectrum.net/support/
Roku Community Moderator