Screen Space Reflection doesn’t work on Translucent Material. But works on opaque material. Surface with Translucent Material is just black. Surface with opaque material reflect sky.
Surface Transluceny Volume does not work with Screen Space Reflection, in which case you would want to make sure you use the Surface PerPixel option since that will use screen space reflections, but it is experimental so you will need to use a the console command r.ForwardLightin 1 which is mentioned in the tooltip for this setting to be enabled.
I don’t know how, but SSR just start works in new project in 4.11 preview 3. So it works with console command “r.ForwardLightin 1” in my old project in 4.10.2