Check if your Bluetooth is on and iPhone not in Do Not Disturb mode. Bluetooth symbol top right should be black - not Grey.
If that is not it, check Bluetooth settings to see that the Fitbit is still paired.
Best AnswerIf you went into Low Power mode (low battery), it has to be charged to 100% before everything comes on automatically. Otherwise you have to turn Bluetooth back on.
Post a screenshot if you need more help.
Best Answer