[Plugin: Zotpress] Delete image

Hello,

I have upload an image for a citation, but I don’t know how to delete it : I go to “change image”, I leave the URL empty then click “Submit”, il says : “Oops! Image was left blank.”, but the image is still there… Any idea ?

Also, I would like to have no white line, no space between citations, is it possible ?

Thanks (and sorry for my bad english)