Products are not showing images - only square with a question mark is shown

HI, I added links of the photos already posted on facebook to the products using the forms wizard, but I only see a square with a question mark in it. Can someone please help me?

Can you please give us the link to the form so that we can check what is going on?

Also, do note that if the photos are private, they would not be possible to be loaded even with the direct link, so they must be public on Facebook.

As mentioned, once we see the form, we would be able to see more and help you resolve it.