Thumbnail in related post

Hi,

I am switching an old blog to Enfold.
I have used the plugin http://wordpress.org/plugins/easy-add-thumbnail/ to use the first image of each post as a featured (no image set as featured in posts’s featured image field)

For the related post, I have selected the option : “Show Thumbnail and post title by default”

I do not have any image displaying on related post and have a weird pen icon floating…

See : http://goo.gl/eNnUqd

Could you help me having the first image of each post / featured image displaying in the round shape?

Thanks for your great support.

Olivia