I'm a technology enthusiast specializing in streaming and digital media troubleshooting. Adding channels to YouTube TV can enhance your viewing experience, but sometimes, users face issues like missing channels, subscription errors, or account restrictions. To resolve this, first, ensure your YouTube TV subscription includes the desired channels, as some require separate add-ons. Next, verify your billing details and update them if necessary. If a channel is unavailable, try refreshing the app, clearing the cache, or updating the YouTube TV app to the latest version. Additionally, ensure your device is compatible and connected to a stable internet connection. If regional restrictions apply, using a VPN might help access blocked content. In case the issue persists, contacting YouTube TV Support can provide further assistance.