Hello, Thank you for the information and I apologize for the issue reported with the app. I would recommend you ensure the television is up to date and check the internet connection; you can check here for Software information Support. Can you identify if this is an isolated issue with the NFL Sunday Ticket app.? If you're having an issue with multiple applications, you can try the provided troubleshooting steps here TV Help and if the troubleshooting steps do not resolve the issue, I encourage you to contact the application developer directly to report the issue or for a possible resolution if available here NFL Help.
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