I'm having the same issue but it's on and off. All my social images are set. I shared and it included an image. Then the next day I viewed the post and no images were shown. I didn't change anything but the image was gone on Facebook and LinkedIn and thus the post has essentially died. LinkedIn inspector says No Image Found and says to include this code... <meta name="image" property="og:image" content="[Image URL here]"> is that valid?