Galleries Not Showing All Items

When I click on a gallery, it shows only the first image in the gallery. On the front end of the website it shows all the images in the gallery. I saw someone else had this issue as well and you’d said to try the reset tool which I did but it is still only showing the first image in the galleries. I’ve tried deactivating all the plugins as well as setting the theme to a WordPress default theme but it’s still not working properly. https://mayestaxidermystudio.com/