You can check on settings first, Maybe you turn off the eye icon on that section.
If every settings are good but the image still not show you should ask to developer help you check code.
You can please Like and Accepted Solution if my suggestion helpful. And if you want to customize or develop new feature on Theme or App => Contact to us via Email or Skype. - Contact Support : Gmail | Skype: live:.cid.309f2fbaceec513