Can you please provide us with more information? What model Roku device are you using?
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? If the issue is still not resolved, we would recommend removing the channels and then trying to perform a factory rest on your device. For more information about how to perform a factory reset, visit our Support page here: How do I factory reset my Roku® streaming device?
Please keep us posted.