Blurry glass

Basically i was trying to make something like this: So Blurred glass material is impossible in Unreal Engine 4? - Rendering - Unreal Engine Forums, so i copied the complex material they made with the custom node but it didn’t work at all (maybe i was missing some of the maeterial settings), so i tried the second PostProcess method they described but then i set it all up the scenecolor node says that it’s aviable only in surface domain maetrials but when i change it the postprocessinput node says that it’s aviable only in postprocess materials so the two nodes are basically conflicting with each other
Another method i tried was to use refraction with noise (Frosted Glass ? - Rendering - Unreal Engine Forums) but it’s not what i’m trying to do