[Theme: Royal] Broken Images Appear

My website is https://www.traditionalcladdaghrings.com, a week or so ago the images on the homepage appeared as broken.

I did not touch the website, they simply just appeared as broken one day. I have tried many things to resolve this however no luck. The images are in the correct folder, the link to the image is correct and the weird thing is that the first image at the top of the homepage appears ok but the following images are broken.