Easyblog posts pushed to LinkedIn not displaying image or description

Hello,

We are experiencing an issue when trying to post blogs to LinkedIn. The thumbnail and description are not displaying at all: http://prntscr.com/8jqex9

LinkedIn support is saying that we are not following the Open Graph Protocol that LinkedIn requires, but we have no problem posting the blogs to Facebook, which has similar Open Graph Protocol.

This is what LinkedIn support sent:

Below are the og: tags that must exist and their correct format:

<meta property='og:title' content='Title of the article"/>
<meta property='og:image' content='//media.example.com/ 1234567.jpg"/>
<meta property='og:description' content='Description that will show in the preview"/>
<meta property='og:url' content='//http://www.example.com/URL of the article" />

Can you please provide some insight on this? We believe that we are following the Open Graph Protocol, so we are not sure why this is not working.

Thank you for your time!