Hi, am using joomla 2.5.14 and k2 Version 2.6.7 as a content manager. Am also using AddThis to share the articles. When i try to share an article everything works fine with all social media like google plus, twitter, etc. But i have a problem only with Facebook share button. It displays the wrong and the same image everytime. You can find bellow the a screen shot of the popup window :
How can i fix it? if you need website access, plz contact me in private. Thank you.

Make sure the image you are using for Facebook (check the components parameters) is valid and follows the FB requirements. (at least 200x 200 in width AND height).

To check the image and all the other og tags use the Facebook debugger developers.facebook.com/tools/debug/

When i changed the the width and the height of the image, the problem was resolved. Thank you so much @Krikor Boghossian