Facebook does not show my post image

Hi team, I'm using the photography free theme and yoest seo. When I post a blog post from my homepage on Facbook, the blog image is never displayed. https://www.michaelneruda.com/hochzeitsfotografie/ Tested three blog posts, never a picture is displayed on Facebook. With other links to my homepage the images are displayed. I tested the homepage from my wife the same way and there the image display works. So I think it is related to the theme. This is different from my wife. On Facebook my homepage is verified. Open graphik is active. Facebook Debugger does not show an error, but it also does not show a picture. I hope someone of you can help me!