Subdivision Surface modifier is not visible in rendered shading mode Subdivision Surface modifier is not worked in render view when render is set to 6 and view is set to 0. What is meant by the 'view' and 'render' options here?
You should put more than 0 in the View parameter of your modifier, typically 2. View is for the Object or Rendered mode of the 3D view, Render is for a definitive render when you click the Render button in the Render menu of the Properties (6 is a lot though).