Hello, @SamueleSarti,
Could you please share your site WP Admin URL and Credentials and also the CPanel/FTP Logins as well in the private content area of this topic so that I’ll check and Install the Theme for you on your site?
WP Admin URL:
WP Admin Username:
WP Admin Password:
Cpanel Admin URL:
Cpanel Admin Username:
Cpanel Admin Password:
FTP Host:
FTP Username:
FTP Password:
FTP Port:
Regards 8Themes Team.