When a website asks for a valid license from Site.pro or your Enterprise server, the licensing system uses requesting website's IP (reported by a website server).
Some times it can be different from the IP assigned to that website by hosting panel.
Reasons for this can be different:
- Network interface configuration (server has multiple IPs);
- Your enterprise builder and website are on the same server and websites domain configured to be visible through its internal IP.
1) make changes in the server configuration;
2) request for a new plan with unlimited number of IPs and add all IPs to your license.