I can’t get my ISOTOPE Gallery to work in my post

I recently purchase this amazing theme and got an ISOTOPE gallery plug in set up. it works fine when I add it to pages. My friend helping me got it to work at first in post but for some reason is not now. I was wondering how I would get it to work again in post? I posted the code given but all it shows is the shorting tab with no images. I’m using sk_isotope_gallery so any help would be appreciated !!