Hello @611shabnam
thanks for your suggestions. I’ve used the debug tool you mention, and I’ve also checked the Facebook Developer Community Forum. There I have learned that the cause for these types of problems could be related to the robots.txt file (which the Yoast SEO plugin also modifies), or the redirection types (which also Yoast SEO uses). My search for a solution to the problem also brought me to this support forum, and I was happy to find that you provide great help and are even willing to look into specific sites, and I was hoping that maybe you would do the same for me.
The Sharing Debugger tool most often shows an error message of the type “Provided og:image URL %IMG_URL% could not be processed as an image because it has an invalid content type” but the %IMG_URL% is a valid image, with correctly specified width and height parameters. Maybe some redirection is causing the problem?