Issues with product photos loading on certain browsers and when the site is opened through Facebook

Site URL: https://www.ecotonejewelers.com/

So everything loads fine on my website when I go to look at it. However it was pointed out to me that when someone tries to access it through a link on Facebook the pictures on the Home page will load just fine but when you go to the product section to shop none of the thumb nails show up at all. If I access the same page directly through my browser it will load everything fine. I have also noticed this issue with NONE of my photos showing up on older browsers. 

What can I do to fix this, this is a huge issue for me. 

Please see attached screenshots. (First shows the view from the home page, second is what my product section looks like, and 3rd is what it looks like when going directly through the browser).