I have image issues too. FaceBook refuses to pick the image attached to the particular post shared from my blog. I used the Facebook URL debugger and it came back with the error:
Object at URL 'http://www.ugochi-jolomi.com/2013/09/pressures-of-waiting-for-a-child.html' of type 'article' is invalid because the domain 'www.ugochi-jolomi.com' is not allowed for the specified application id '211243842362257'. You can verify your configured 'App Domain' at https://developers.facebook.com/apps/211243842362257.
I have no clue what this means or how to fix it. Please help me!!!