Gallery? Not sure how…

Poor documentation (and horribly garish admin area). I’m only able to add a single image to the “galleries”. I can’t find any documentation as to what I might be missing, or if perhaps this is an issue with 3.8. Seems the reviews and support threads are plugin author related, so no help there either… (plugin authors shouldn’t be rating their own plugins, btw). Unfortunate as it looked like a promising plugin. Not going to roll the dice on the Pro version…