Bluetooth device does'nt appear on iOS list, but appear on the BlueFruit Play App. (ANCS-Gizmo)

[julienkermarec]

I have tested ANCS-Gizmo project by @jedgarpark

When i try to pair, the circuit playground bluetooth doesn't appear on the iOS bluetooth devices.

It's working with the default playground, it's appear on the BlueFruit Play app. how to fix this problem ?

• Arduino board: Circuit playground Bluetooth + TFT Gizmo

• Arduino IDE version (found in Arduino -> About Arduino menu): 1.8.13

• List the steps to reproduce the problem :
  Reproduce the ancs-gizmo project : https://learn.adafruit.com/ancs-gizmo/overview