Advanced Image Styles 0.2

Hi, I was having trouble with image alignment after the upgrade to WP3.9 and installed Advanced Image Styles as a work around. The update to the the plugin has the right and left image margins set at “auto”. I can’t change them as the option is grayed out. I want to put a gap between images that are together on one line and I used the right image margin to do it but now I can’t. Are you able to suggest a fix?
thank you