Not working on cm-13 (Android 6.0.1)
I used to have this app on cm-12 running Android 5.1 on a rooted HTC One and it worked fine. But I recently upgraded to cm-13 (Android 6.0.1) and the app doesn't work anymore. The only permission the app asks is location. When I open the app a notification bubble appears saying "Starting f.lux" and it seems to try it for a while, but nothing happens. Changing settings in the app makes the notification bubble appear again, but still no effect.
Disregard... Forgot to enable root access for f.lux.