Hi,
I'm using JSitemap Pro on http://www.tompartners.com/ and declared all search engine metainfos, including images. It works well with Facebook and Twitter, but in LinkedIn, nothing displays, except site url (see image).

As you see, no title, no description, no image. It's quite a hudge problem because it's a B2B site, and informations have to be shared on LinkedIn rather than Facebook or Twitter.

Besides, I've got another problem : Google search console can't read robots.txt file when I try with Google's test tool. File is on 644, it can be seen online, site test on GTmetrics is good (A 90% for PageSpeed score, C 74% for YSlow score but mainly because I don't use a CDN). And the sitemap is still pending, despites I submitted it 10 days ago. So, there is no Google indexing for this site.

Could you help? For now, most urgent thing is LinkedIn problem.