https://www.rokucom-support.com/netflix-not-working-on-roku/
The Netflix app may have stopped responding to Roku. Or sometime the problem can also occur if there is some connectivity issue or problem in the device. The issue can arise because of any reason however you must understand what is wrong, why Netflix is not working on Roku and how you can fix this issue.

Roku is a superb device that allows you to stream internet streamed content on TV. However, sometimes while using Netflix app you may face a few problems. While there could be any reason behind this problem the troubleshooting solutions that we are going to discuss in this blog will help you fix it in real-time. So, that you can enjoy binge-watching your favorite TV shows on Netflix again.