Specifying an Image when sharing a Marketo landing page on Facebook
I followed the directions found here: http://developers.marketo.com/blog/specify-an-image-when-a-marketo-landing-page-is-shared-on-facebook/
but for some reason, I still do not see it working for the small preview image that shows up. It only shows up if you click the right arrow to display the other option. (See below images). Does anyone have any other advice as to how we can fix this? Thank you.

