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Are you using a Win10 Computer?
Are you experiencing the same issue with other devices like smartphones or tablet?
What troubleshooting have you tried so far?
BasilDV
We can't find any information about the error message that you've been receiving on your Google TV.
You may check it directly with Google support for further troubleshooting.
Also, please make sure that you have the latest software installed on your device to avoid any problems.
BasilDV
@BasilDV @Happy_go_lucky . Any chance the N3DM6U error is coming from the TPG app? Otherwise, how woulld anything else know the user's plan, TPG username and address?
Have you tried to uninstall and reinstall the App?
You may also try to reboot the modem/router to give it a quick refresh.
Let us know how it goes.
BasilDV