Thanks for the post.
Did you restart your Roku device before re-installing the channel? That step is crucial when performing the troubleshooting. If you haven't tried the suggested order (remove > restart > re-install), we would recommend giving it a shot once again. Make sure to restart the player from the Settings menu by navigating to Settings > System > System restart > Restart.
For detailed instructions, refer to this Support link: How do I resolve channel playback issues?
Let us know how it goes!
All the best,
Roku Forum Moderator