Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
I would suggest starting by restarting your Roku from Settings->System->System restart. If that doesn't work then also restart all your network equipment - gateway/modem/router (which may be just one box). Just unplug the power for several seconds and plug everything back in.
Roku Community Streaming Expert
Help others find this answer and click "Accept as Solution." If you appreciate my answer, maybe give me a Kudo.