Unable to fetch more images on products template


I am unable to add more product images on the product page template. I want each product page to show more images (instead of just the single primary image) and I just can’t figure it out. I tried adding a collection using the more images field. Even though “more images” is fully populated with images, it keeps saying the collection does not contain any images (when it certainly does).

Here is my site: shoptwoam.com