Hello.
Please find the error here: http://i.imgur.com/krt8Azg.png
I've contacted my host and they said:
"By default outgoing connections from our server are blocked, this error :
php_network_getaddresses: getaddrinfo reports that, the software is contacting a remote site for any data collection. Could you kindly contact Blesta support to confirm the remote ip/host contacted via the Blesta program, we can allow access for that same host on our server."