When you encounter video and audio issues on your Roku Tennis Channel channel, you can perform the following actions to resolve them:
To remove the Channels from your Roku streaming player or Roku TV™ from within your channel lineup or from within the Roku Channel Store. Channels can also be removed when using the Roku mobile app on a compatible mobile device. When you are ready to remove a channel, first determine if the channel has a subscription and whether that subscription is billed to your Roku account. Please visit this page for detailed instructions - How do I remove channels from my Roku® streaming device?
To add apps, please follow the instructions on this page - How do I add channels to my Roku® streaming device?