That was the trick. She had been trying to fix the app from inside the app. But on an LG TV, Netflix is a ghost—it lives inside the firmware. To catch the ghost, you have to exorcise the whole house.
She clicked the Netflix button on her Magic Remote. como actualizar netflix en smart tv lg
She went back to Netflix. Same error. She unplugged the TV, counted to thirty, and plugged it back in. Nothing. That was the trick