Make sure the AVChat client side files are hosted on a licensed domain.
For example if your license key is issued for example.com and localhost make sure you use an AVChat installation located on example.com, subdomain.example.com (including www.example.com) or localhost .
If you need to change the licensed domains you can do so from the client area. A new key will be generated every time you change the licensed domains.
One you have a new key you must replace the old one. You can:
The license key does not have to include the ip or domain of the media server.