The best thing to try is to factory reset the TV. It sucks but it fixed a huge issue I was having (unrelated to this) and I am now happy I did it. It will take some time to get your apps and settings back but worth it in my opinion. If you call LG support they will most likely suggest the same thing.
I m using new TV lg32lj616 unable share screen using any mobile Moto or MI or One plus 2. all these mobile works fine with sony tv. In one plus it get connected the screen is shared for few seconds after it get disconnected automatically.
after webOS update, can't use Screen Share anymore
in LG webOS Smart TV Questions
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I m using new TV lg32lj616 unable share screen using any mobile Moto or MI or One plus 2. all these mobile works fine with sony tv. In one plus it get connected the screen is shared for few seconds after it get disconnected automatically.