When I upload additional images for a product, they are showing up on the screen as the actual size of the image instead of the smaller thumbnail. If I delete the image out of the thumbnail folder the box where the additional image should be goes back to the smaller size. I have adjusted the settings for the overall thumbnail image and it did not change anything. How do I get the additional images on the page to display in a small format so the customer can click on the image to see that larger one from the product description page? This was working and now it is not and nothing has changed. We are running version 3.8.0