Photorealistic eye generator 1.2 does not work correctly in blender 2.8 and 2.7


Recently I’ve bought the Photorealistic eye generator 1.2 by Cesar Salcedo Garcia on Blender Market. I need some help from him because his product does not work well in my case,but he does not reply to me,so I would like to ask here. I want to display it correctly. He told me that I should change the scene value from “visualization mode” to “Final eye render version” ,but below you can see what happens when I do it in blender 2.7 and 2.8 :