I only own the first consumer version rift and not the S. But I will look into it, its possible that the plugins I used don't support it properly because it came out after I last updated the plugin.
The book can be turned by swiping your hand across it left and right. It's not ideal, I'm currently trying to think of a good way to do the book interaction, plus it doesn't really react when you do turn the page so its not clear when you have done.
Thankyou for the feedback