Facing TV Problems? Ask a TV Technician.
Hey Robert,Welcome to JustAnswer!You're chatting to Pete.
Try restarting all wireless equipment (modem, router, extenders, etc).
Check that other wireless devices can connect ok to the internet.
Then try opening some apps on the TV again.
Let me know if Netflix works ok now.
(if it still doesn't work let me know if any other apps work ok)