Refraction sorting works best when the any element inside or behind the refractive element is split into a separate mesh/object. If the inside bits are part of the same object as the transparent element, try splitting them into unique objects and reexporting.
I already split them but still sort of working in some part of the camera, or if I move the object down it show fine! here video show the problem : https://www.dropbox.com/s/zev0z6va49xcn5y/vid1.mp4?dl=0 here the file if you want to check : https://www.dropbox.com/s/jrkwcv0hoae8x24/d.fbx?dl=0