This kind of thing happens to me occasionally, and rebooting the Apple TV usually fixes it.
https://support.apple.com/guide/tv/restart-apple-tv-atvbb8553426/tvos
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This kind of thing happens to me occasionally, and rebooting the Apple TV usually fixes it.
https://support.apple.com/guide/tv/restart-apple-tv-atvbb8553426/tvos
First step for pretty much any issue is reboot. Might fix it. Might not, but it's easy.
Check main settings app. Apps then TV. Make sure those services are still connected.