Hi Mel,
maybe something strange happened, in any case now it works. I did the same thing in the same facbook page (
www.facebook.com/pages/Albiero-Srl/673547352763035) and now you can see it in the website stream page
www.albierosrl.it/index.php/news/facebook-news
That is what I did
1)
developers.facebook.com/tools/debug/og/object/ and fetch new scrape information (otherwise FB doesn't see the OG default image).
2) use my client page account to public a link of a web site.
3) upload an image (not choosing the OG image)
4) Public
I think I did the same thing in the post not shown. In any case it is not important because now with the last post it works. I hope it will continue.
Thanks for everything
Francesco