Please note Rollo is not compatible with Chromebook because Chromebook doesn't allow third-party software / drivers to be installed. 

If you connect Rollo to a Mac or PC, you may then share it with your Chromebook via Google Cloud. 

Please see this How-To link on sharing your Rollo from Mac / PC with Chromebook:

Note: This video was not made by Rollo. However, it contains the correct installation steps.