Plugin Not work, images do not appear

Hi, i have this problem on my site.
the gallery not appeare in the page.

Installation of the plugin and activation all ok.
Wordpress and other plugin all last version.
i clean cache, cookie nothing change.

I create a gallery and i put shortcode in the page but nothing appeare.
I don’t understand where is the problem.
If in the plugin, in the theme or other.

The theme is Athena free.

the shortcode in page is this:
[FinalTilesGallery id=”1″]

the link to the page is in the section of link.where is the code is: https://www.lucapiccinini.it/backstage-di-clizia/

Please help me!

Luca

The page I need help with: [log in to see the link]