Prerequisites
Reco requires Site-wide API key that can only be created by Files.com administrator accounts.
Create API key
Log in to Files.com using an administrator account. Then in the side-bar navigate to Developers -> API Keys.
Click on Add new API key.
Type in a Name for the key, and leave the Valid through field empty.
Enter your account password and click Save.
Copy the API key to clipboard and save it in a safe location.
Close the API key window.
Integration with Reco
In the Files.com integration pop-up screen in Reco fill in the API Key you have created.