Update 12/15/2019. We now have purchased 3 sets of these and every candle worked and continues to work. We also assumed (reading reviews+ here) that there was no auto-on feature. There is! At least in the versions we purchased on 11/30, 12/4, 12/10/2019. Practice with 1 candle. Hit OFF. Hit On. Hit FLF. Hit 4H. That's it. Pause a few seconds between button presses. Also, the candle must blink twice to acknowledge receiving the command, else press again. There seems to be a lot of confusion on whSee full review