Try removing the channel from the Roku home screen by navigating to the channel tile, pressing the * key on your remote and choosing 'Remove channel'. Then restart your device from Settings>System>System restart. Once your player starts up again, add the channel back once more.
Does this clear up the issue you are seeing? Please keep us posted what you find out.
If you are unable to resolve the issue, can you please provide us the following information:
-Roku device model, serial number, device ID, and software OS/version (these can all be found in Settings > System > About)
-does this issue occur on a specific channel? if so, what channel and what version/build is the channel (this can be found be selecting the channel on the Home screen and pressing the * button)
-tracker ID when this issue occurs (when you see this issue occur, press the Home button 5 times, followed by the Back button 5 times)
-steps to reproduce the issue you are seeing
With more detailed information, we will be able to assist you further.
I'd be happy to take a closer look to see how we can help get you up and running.
A few questions here to better understand what you're experiencing:
Does the issue only occur on Youtube or all channels on your Roku device?
Are you being prompted with an error message?
How long has the issue been occurring?
What troubleshooting steps have you taken so far to try to resolve the issue?
As a first step, could you try removing the channel that you are experiencing the issue with from the Roku home screen? Then, disconnect your device from power for a minute. Plug it back in, then try to add the channel back once more and see if this clears up the issue.