Serenity for Android 1.9.5-M1 is now available for testing. This version is mainly an update to make sure the app still runs on Android Marshmellow devices. There were a lot of small bug fixes that needed to be addressed to prevent the application from crashing. I believe it should work with the latest plex server, but haven't tested it with it.
App can be downloaded at the following location:
This should still work on Google TV, Android TV, Tablets, and Fire TV devices. Please report any issues here or preferably at the Github project site.