Hi @hokelgo2,
Greetings from the Roku Community!
After attempting the troubleshooting steps and videos from other channels play fine, contact the channel provider's customer support team to report the issue and get help. The channel developers themselves maintain channels on Roku. In this case, an issue within that specific channel likely needs to be addressed with an update from them.
Please let us know if there's anything else that we can do to assist you.
Kind regards,
The Roku Community Team
John
Roku Community Moderator