something went wrong with your new configuration. under NS1.DIGITALOCEAN.COM there is currently no A record for this domain available. you can check this with http://en.dnstools.ch/dns-nameserver.html or with the dig-command when you're in front of a linux / mac pc. open a terminal and try: dig A www.marchespettacolo.it @ns1.digitalocean.com
EDIT: www.marchespettacolo.it is a subdomain of marchespettacolo.it (which already points to 82.196.7.250). you need to make a seperate A or CNAME record for that.