NOT WORINKING WITH FLATSOME REVOLUTION SLIDER

Hi I am about to lounch a revised website usign:
– THEME – FLATSOME
– PLUG IN: PAGE BUILDER SITE ORIGIN
– REVOLUTION SLIDER
I have builded my pages with site origin builder and added the SLIDER as a widjet, everything worked well with my previous theme SUPERSTORE.
Now with the FLATSOME theme something is not working.
Can you please give a look and let me know:
http://www.staging2.pietredirapolano.com/ (under construction)
https://pietredirapolano.com/ (actual site, to be changed)
As you can see the slider is not showing.
Thanks,
Neri

https://wordpress.org/plugins/siteorigin-panels/