Hi Victoria,
unfortunately, this is not the case.
I bought the images and they work perfectly when I insert in other places in the website. I tried, before writing, if the problem was referred to the images. Look here http://www.assistenzeimpiantistiche.com/settori/energy/ …there is the same image with the dog and it is perfect!!
No, because they don’t work only in the slideshow of the homepage!
There should be something in the CSS code that darkens them.
Could you verify it?
It is urgent as I have to launch the site.

Thank you very much

Best regards
Tatyana