Hi @sonnyncher,
Thanks for reaching out here in the Roku Community!
We understand that you're unable to save videos to "Watch Later." You can reach out to YouTube directly and inquire further about this. Most channels on the Roku platform and developed and designed by the channel providers themselves.
If you have any other inquiries or concerns, let us know.
All the best,
Kash
Takashi O.
Roku Community Moderator