Samsung Bravia Smart TV Netflix not working?

I bought a Samsung Bravia Smart TV on Ebay classifieds. At first everything worked perfectly, but Netflix can no longer be opened. I already had the problem with another TV set. But this worked miraculously again.
The device is connected to the internet, Youtube works perfectly.

Can someone help me?

Update app, update TV firmware.

TV set back time. See if there's a completely new Netflix app in the AppStore of the TV.

vlt Netflix no longer supports the model. Definitely gives iwo a list where you can look up supported models.