UniFi Fabrics Integration
With UniFi Fabrics you do not need to set up local users, or provide direct access to your controller. This is especially useful if the controller is located behind a NAT or even a double-NAT.
Follow these steps to allow Fydelia to log your guests onto your network:
UI.COM settings
Click settings - API Keys and Create New API Key:

Give the key a name and set to "Never Expires"
We also recommend unticking "Site Manager" as Fydelia only needs access to the UniFi Application Controller:

IMPORTANT: Be sure to choose the appropriate sites that Fydelia will be able to manage. These sites will appear as a list on the Fydelia configuration page, so be sure to expose only those sites you wish to be accessible via Fydelia.
Click CREATE
Copy the API key that is given to you for the next step.