Advanced Gallery – Hello Rosette

Hey there! I’ve had this issue in another HYD theme, too, so might just be my own lack of knowledge. I can’t get the advanced gallery to show my images. They don’t come up in preview, nor when I publish. Here’s the page for reference – https://hey-viry.com/about/
Can you help me figure out how to ensure the image shows? I only have one picture in each and it doesn’t show. 
Thanks!