Facebook debugger & plugging issues on sharing images

Hi,

Overall the component is working Ok on our web page www.home-biology.gr

On some particular pages we are facing an abnormality. For a example on www.home-biology.gr/ilektromagnitikes-ak...s-ipsilon-sixnotiton the page component shows the likes Ok, but won't show the shared picture as it should base on the faceebook debugger ( see attached photo)

I don't understand where the problem is.

Thanks in advance

similar to the above is the www.home-biology.gr/metrisis-aktinovolia...s/ypsilon-syxnotiton

By doing a further investigation I have discovered that the pop up for the share shows a different icon than the debugger, but when you share it in your time line it will show what the debugger has.

for example have a look at www.home-biology.gr/ilektromagnitikes-ak...eytikes-aktinovolies at the debugger.

The pop up on the website shows something irrelavent (perhaps something from the old page, due to canonical rules?)

Yet when you share it shows exactly what the debugger has.

And note that it is only on the share when you have the like button.

Thanks