The newest version has some improvement; being able to select different colors for different notifications and actually getting them to go off when you've pulled down the notification bar. however, it doesn't blink for me at all. When i get a text or email the corresponding light is a steady constant light if the screen is asleep. If you wake it up the light either disappears or only lights up very infrequently.
I've read some posts before the latest versions came out that some users had success getting it to work by actually turning Accessibility off. This seems to turn off the entire app for me.
anyone having better luck?