Habitationsmicro on "New images won't show up on my pages and articles"

Hi!

I have a weird issue with my wordpress website. When I try to add some images on my articles or pages, the preview version displays them fine but once published, they don't appear.

Here is a page of my website where images don't appear: http://www.habitationsmicro.com/produit/remorque-mini-maison-acier-galvanise/. Note that the video is appearing, but the two images are not...

I am also using the plugin "Visual Composer" and since this problem appeared, the plugin isn't functioning. I tried to disable the plugin but it makes no difference.

The theme I am using (Ivena) has not been updated in quite some time. Could there be a compatibility problem with it?

If someone could check what is the problem I would be very grateful. Thank you in advance!