Thanks for the post.
Can you please provide more specific information about the issue you are experiencing? What Roku model device are you having this issue with? Have you removed unused channels on your Roku device? After removing those channels, have you tried restarting the Roku device before trying to add the Netflix channel? If you are still seeing the issue persist, are you seeing an error message on screen?
With more detailed information, we will be able to assist you further.
Roku Community Moderator