That information is set by using Open Graph Tags on your pages. JFBConnect will try to automatically set those tags when it can and should always include the title and description of the page. When possible, we'll add the image tag as well.
There's likely 2 reasons the data isn't showing properly on your site:
1) You're using Joomla 3.2.0 and have "GZip Compression" enabled in the Global Configuration area. There seems to be a bug with that setting in Joomla 3.2.0 that we're investigating. Please try disabling it for now. That should make the title and description show up better.
2) The images do not look to be a part of the article itself and are likely using another extension. JFBConnect can automatically add images that are part of the article to the Open Graph Tag data, but we don't look into other 3rd party extensions. For now, you can add the following 'tag' to the article text to set the image:
{SCOpenGraph image=https://eosfoto.nl/images/Zeche_E/Zeche_Ewald_05.jpg}
Once added, you can use the Facebook Open Graph Debug Tool to test what they see for pages on your site:
developers.facebook.com/tools/debug/og/o...en%2Furbex%2Fzeche-e
Right now, if you click that link you'll see an Error message because of #1 above.
I hope that helps explain, but if not, let me know!
Alex