Muse device does not show up under Bluetooth devices in iPhone 7


I recently bought a “muse - the brain sensing headband”. The power button has a power symbol on it. I have been able to successfully use the muse app after pairing it with the device.
However, now I am trying to write my own iOS App using the muse SDK. Despite several attempts, I have not been able to get the muse device to show up under the “Settings -> Bluetooth” screen on my iPhone 7. I have restarted the muse device, restarted the phone, killed the muse app on the phone - all to no avail. Specifically I am following instruction number 4 at
Is there something I am missing here? Any help will be greatly appreciated.