To be able to use PBX Stats, you need to whitelist all the IP addresses allowed to access your PBX Stats account.
You can set the required web ACL (access control list) in your account at CommPeak Portal.
To set the web access control list:
Log in to the CommPeak Portal.
In the main menu on the left, expand Cloud PBX and click PBX Instances.
Click the Firewall Settings icon.
The Firewall Settings pane with several tabs will open on the right. Here you can insert IP addresses to web and SIP access lists.
Click the Web ACL tab.