Problem with encoding on Facebook Posts

Hi there,

I am experiencing a problem with the encoding of Facebook posts. I am writing in Greek language and every time I post something from my site to Facebook instead of the correct text at the post it shows this font type: “Χάκερ εισέβαλε στο προφίλ του Mark Zuckerberg στο Facebook για”.

As you may have noticed, English text remains the same but Greek characters change to that messed up encoding. Twitter and Google+ posts don’t change and work perfect.

I have no idea why this is happening only on Facebook. The only thing I changed from editor was the font-family of my site from serif to arial, helvetica, verdana in many parts of the code (unfortunately) because the previous one looked awful with the Greek characters and I don’t know if I changed something crucial for Facebook encoding.

Can anyone help me?

Thank you in advance.