Voluemtric cloud works good in edit mode but doesn't appear after game built

I downloaded a voluemtric cloud asset from here : https://github.com/SebLague/Clouds It works great in edit mode, but after the game is built for pc or webgl the cloud just disappears. I had the same issue when I once attached cloth component to a gameobject. In the end it was fixed after I turned on the "Import BlendShapes" of the fbx file in the asset fold. So does any option in asset folds I should turn on/off to let the cloud show up after the game built?