Hi @kirala,
Thanks for posting here in the Roku Community!
We appreciate you informing us about the issue you've encountered with the closed caption of MAX not functioning properly. It might be a better option to reach out to MAX directly and inquire further about the issue to resolve it. Most channels on the Roku platform are maintained by the channel provider, including the design and development of their channel.
Keep us posted on what you find out.
All the best,
Kash
Takashi O.
Roku Community Moderator