Hi, @Azucena!
Welcome to the Roku Community!
We appreciate you reaching out to us about the trouble you've been experiencing accessing your YouTube channel. We are fully aware of the issue and have been active since yesterday.
We are glad to inform you that the issue you reported has been resolved successfully. We kindly invite you to attempt the task again by following these troubleshooting steps: Press the Home button, go to Settings, select System, choose System restart, and then hit Restart.
Kindly let us know if these troubleshooting steps have made any difference to your concern.
Sincerely,
Elmer
Elmer H.
Roku Community Moderator