Because there are no License key for Doodleoze Free Footage Module. Activation works with login of your Explaindio Membership account inside the software.
Simply enter your Explaindio Member Account Sign-up Email ID and Password inside Settings of your Doodleoze Software, Close Settings, Create a new project, add a scene and click any of the asset panels i.e. try adding a video. Try opening the Royalty Free Footage after you accessed any of the cloud libraries.
However, you'd also need to enter your Pixiaby API key in settings to use Royalty Free Footages from Pixabay and enter your Pexels API key in settings to use Royalty Free Footages from Pexels.
Note: If you didn't buy Doodleoze Free Footage Module yet, you may learn more and buy it from our sales page here: http://doodleoze.net/freefootage