Earlier today, I decided to try out the Light Flow app (to customise LED notifications). I didn't really like it so uninstalled it again. Since then I've noticed some issues with Hangouts SMS notifications. When someone sends me a text while my phone is locked, my phone does nothing; no sound, no vibration, no LED. When I unlock the phone (just pressing the power button so the screen pops up), the message immediatly pops up as if it arrived just then.
Does anyone know what could cause this, is there some kind of option for this which the Light Flow app turned off? Also, the issue I just described doesn't always happen, sometimes messages just pop up (sound, vibration, LED) as they should, sometimes nothing happens untill I unlock the phone.
Thanks in advance for any help!