Whisper Flex (Ultimate) has two different pairing modes. To pair the device with the Duux app, it is important that the Wi-Fi icon flashes quickly. If you press and hold the dial for 5 seconds, your device will enter the correct pairing mode and the icon will flash rapidly.

If you are sure that the Wi-Fi icon is flashing fast, you can go through the app's pairing process again. We'll show you how on this page.