You should do the following:
- Sign in to Cerebro as universe administrator.
- Open the Cerebro administrator panel (select Tools/Administrator… from main menu).
- In the Administrator panel go to the Universe tab.
- In the Universe tab open License list tab.
- At the top of the tab, click Get HostID used in license generation.
- In the appeared window, copy the text from the HostID field and send it to the Cerebro vendor (email at email@example.com).