When streaming apps fail on smart TVs, weak internet or app glitches are often to blame. Start by testing your internet speed; streaming generally requires at least 5 Mbps. Restart your router and TV, as this can often reset the connection. Check the app store on your TV to see if the app requires an update, as older versions may not support current streaming standards. If possible, uninstall and reinstall the app. Firmware updates for the TV can also resolve streaming issues, as these updates often address compatibility with newer app versions. Consider using an Ethernet connection for a more stable internet connection if Wi-Fi continues to pose problems.