Published site won't show pictures???

This might not be a code-related question but we still really need help!

We have published our website with excitement yesterday. To our dread, this morning, we found out that some users aren’t able to load some of the pictures on certain browsers (Edge and Explorer in this example). When we tell them to press Ctrl + f5 then they have refreshed the site succesfully and can now see the picture.
Internally, the problem was because the information got cached. But why is this happening to first time users who only have access to the front-end of the published site?

Hey
I understand that you need answer but as you yourself wrote this forum is for code. Please address your questions regarding this to support@wix.com and they will investigate