Do you have issues when you apply a new license key or when you try to update XCALLY?
In this way we can check if it is enabled.
2.If you still have problems, also after the check of the IP, please verify that the following outgoing TCP ports are open to the host provisioning.xcally.com:
TCP 80, 443, 8080,3306
telnet provisioning.xcally.com 80 telnet provisioning.xcally.com 443 telnet provisioning.xcally.com 8080 telnet provisioning.xcally.com 3306