Facebook carousel post image not showing

Hi there, from last months some images relatives to Facebook carousel posts and twitter tweets not showing.
I’ve already tried to re-create the feed deleting the old one.
But the images still not working. The Facebook feed, the image is the fan page default. Twitter instead not shows the image at all.
Here’s the link https://www.orapuoiunipolbanca.it

Please let me know.
Thanks