Please first download, install, and register ASUS WebStorage (Download and installation instruction).
After that, open Windows 8 Style UI to enter the green-background app page. There are two areas on the app page, Space and Tag. In Space, there are MySyncFolder, Back-up Data, and My Collection. In Tag, there is Starred, where all the files starred can be found.
Slide the screen leftwards to show what is on the right side of the screen.