You need to unblock this content by setting your broser.
ブラウザーはこの内容をブロックしないように設定してください。

INFO:
Just bought a new 4K Ultra HD TV, but Netflix isn't cooperating? It's troubleshooting time! This guide will help you get back to streaming in premium quality.
How to watch Netflix in 4K if you're not seeing the option | Digital Trends