- Some apps will require you to pair your trainer as the source of your cadence in a separate step from pairing it as your power source and controllable trainer. Look for the option to pair a cadence sensor in the app's "devices" or "connectivity" menu or equivalent, and select the Fliiiight trainer.
- Try pedalling. Some apps will not recognize cadence data from your trainer until the wheel is spinning.
Check your app's support resources for more assistance.