Facebook Social share is not working for some pages. - preview image and URL is not shoing
same here. if are ÖÜÄ Ø or other "non-english" letters, then on the page isn't showing picture of the link. It's sucks! strange, but with ĄČĘĖĮŠŲŪŽ it's working perfect
This is because the name of the image is not in English. Try changing the name of the image to a name in English