Essential Grid Photos Not Displaying

Hi all,

I feel like this is a relatively simple issue and yet I have not been able to solve this problem for weeks. On one photo gallery, the photos do not show up until I click “Filter-all”. I want photos to show before this happens. I also want the photos to become larger upon clicking them, but this does not happen unless you include the magnifying class. My website is currently displaying at http://www.wordpress.zahrahaider.net. I am referring to the Fashion photography page.

Please help me with this if at all possible!
Thank you!