Please check if it is functionally not working with the Android devices or customer is unable to understand the usage of Google Fast pairing

"This is software related feature that gives a pop-up window like apple air pods which helps quickly pair Bluetooth devices with each other using Bluetooth Low Energy (BLE) or device location.

1. To ensure the function to work smoothly, Bluetooth and location of Mobile Phone should be enabled and the device should be on, then pop-up window with product name will appear on the Mobile phone screen just tap and both the devices will get pair.

2. This feature is only related to Android Mobile Phones

3. The phone has the following mechanism: if the user cancels the pop-up window (i.e., taps on the empty space of the phone to make the pop-up disappear) twice, the phone will no longer display a half-page pop-up within 5 minutes. However, notifications for the device can still appear in 'System Settings - Bluetooth Interface' or 'Google -> Devices & Sharing -> Devices -> Nearby Available Devices.