When sharing a link of my blog on social media, the preview shows my old header image / gravatar instead of my new one :S
I tried every thing, deleted the old picture from everywhere (header, account, profile, library, Gravatar...) but it's still the one that shows in the preview when I share any link of my blog on Fb or twitter.
At this link you can see the old that still shows: https://dl.dropboxusercontent.com/u/5958338/Capture.JPG
While the new one is right there on my blog since more than 24 hours: http://abousal3a.wordpress.com/
How can I resolve this problem?
Thanks in advance
The blog I need help with is abousal3a.wordpress.com.