Xposed not working on B322 (Lolipop 5.1, Mate 2 L03)

It used to work well on Android 4.3 (B148). it is said that Xposed is not compatible to SDK 22 after upgraded to B322. Modifying build.prop did not make it work. The only reason to install Xposed is to use Greenify's experimental functions.

Thanks for your any suggestions.