adding books by using the app

I have downloaded the app and done the following
– Installed the WP REST API 2.0
– Activated it
– Made a library called BOOKS
– Made a page called “bookreviews” and put the shortcode in it
– Configured the setting to http://mywebsite/bookreviews (You may now add books)
– Clicked the add a book button
– The camera read the barcode and made a noise
– Nothing!!

Help!