Apple TV app not playing content

Hi meerabk,

Thanks for coming to Apple Support Communities for help today.

Have you tried power cycling your TV and Wi-Fi/Modem? Even unplugging them from power 5-10 seconds may trigger the app into working.

If that doesn't resolve it, Reset the Apple TV app.

"If you’re having problems and the Apple TV app still doesn’t respond after restarting, try resetting the Apple TV app. When you reset the Apple TV app, all data is erased, including your accounts and configuration.

1. In the Apple TV app , navigate to Settings. 
2. Go to Reset, then select Reset. 

Resetting the Apple TV app restores it to original settings and removes your personal information, TV shows, and movies from the smart TV."

Finally, if the issue continues, take a deeper dive with Apple Support.

Have a fantastic day!