Masonry gallery not working properly, only 2 columns

I am using the Masonry gallery on 2 different websites with the same shortcode. One of the websites work nicely, I love it.

But this website here the gallery does not show up correctly. I am using a masonry gallery with 4 columns. It shows up only 2 columns.
https://mandyrae.wpengine.com/events/

Is this a compatibility issue with the theme? How can I workaround it? I love this plugin so much, I hope I can still use it.

Thanks for any input here.

https://www.ads-software.com/plugins/wc-gallery/