Please note Phomemo is not compatible with Chromebook because Chromebook doesn't allow third-party 

software / drivers to be installed. 

If you connect Phomemo 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 Phomemo from Mac / PC with Chromebook:

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