Masonry layout

My photos in my portfolio used to be in Masonry form, by now they are in the single column format. I have not changed anything! And in my portfolio settings, it says I am in Masonry format. However, it’s not showing up that way. I was so close to sharing my website and now I have encountered this problem!! How do I fix this? Not only are the portfolio cover pictures in this layout, but the photos within each portfolio entry. I need them to all be in Masonry format.

The page I need help with: [log in to see the link]