Will try to write in very plain English...
For three weeks write in your site, 'Aria server that does not online'.
Arya server is online 24/7 because working together with our applications business packages.
3-4 days ago you delete the Arya server from site list.
We should fix the problem solely attributable to you and to restore the function of the Arya server again.
If you can not get them to let us know so decide what to do next.
In the server operating firewall (iptable) and support for dos/dDos, protection that can not switch off.