On this grav site: http://istenieroforras.igehirdetes.ma/ the og image tag, etc. seems to be set right, gzip compression is disabled as it can be seen also from https://checkgzipcompression.com/?url=http%3A%2F%2Fistenieroforras.igehirdetes.ma%2F.
Why facebook won't load any image for any of this site's pages? No title, no images, nothing. What is wrong with this site? Tried to debug it with facebook's tool, waited for weeks to change, these didn't help.