Your AuthAnvil On_Premises server needs to have an active internet connection and able to reach https://customer.scorpionsoft.com/SubscriptionBroker/Broker.asmx
Note: The server must have an open Port 443 connection and not using any Proxies or Re-Directs.  

If the AAOP server loses connection for more then 4 days it will lock down the entire AuthAnvil and cause a service disruption for your users.