Photos not being shown when items are shared from Easy Social.

Hi again!

So I am having problems with people who are sharing out links from Easy social to Facebook, when they press the share button from Easy social, it shows the photo, but then when it gets to Facebook, the photo is gone! Please take a look at the attached photos

Also I have had some problems when people share items, a different item is shown. I don't have any evidence of this unfortunately, I will gather some when it happens again and send ti to you, but is there a reason it may happen?

Many thanks