Revolution slider conflict with Merci theme
Disabling the theme is the only way to solve the issue.
I tried to install version 2 on a demo version of the site but the result is awful https://demo.polimedia.net/fonderia/
Also some fixes were done by your team as I had some problems with the old theme version (and I see you did not make a child theme).
All works fine now and I do not want to break all the work done, just have RS working in the simplest way.
What do you suggest?