hmm...also having trouble setting up Light Flow for some reason. I have accessibility enabled and each notification is enabled as well.
In the Android display settings, does Pulse notification light need to be enabled/disabled? Are all you guys that got it to work rooted?
[edit]ok, this is how I got it to work. For whatever app you want Light Flow to control, you have to go into each specific app and set those specific notification settings to silent/no vibrate. But you can still enable the setting to show up on your system bar. Once I did that, Light Flow started to function properly.
Also, it looks like you have to re-enable Light Flow every time you restart your phone. By re-enable I just mean opening up the app. Hope this helps!