Reflections are black on iOS 4.23.1

I have search all around the forums for a solution for this but nothing seems to work.

Unreal Engine: 4.23.1
Development Platform: MacOS 10.14.6
Target Platform: iOS Metal 2.1 (Mobile HDR Enabled)

I have some floating particle rocks with a fully Metallic and Specular Material (a perfect mirror) and I am trying to have some reflections on them either ScreenSpace or from a Cubemap but all things fail. I attach some screenshots.

SM5 + SkyLight Static + Sphere Reflection Capture (Captured Scene)

SM5 + SkyLight Stationary + Sphere Reflection Capture (Captured Scene)

ES3.1 (iOS deployment has the same problem) + SkyLight Static + Sphere Reflection Capture (Captured Scene)