How to make sure your keyboard is discoverable in Bluetooth mode for the Akko 3068 BT3.0?

Once you long press FN+TAB, the device wouldn’t be discoverable UNLESS you press FN+E or FN+R or FN+T to send the BT signal to the laptop and other devices. ​

Please press FN+TAB (long press), and then followed by pressing FN+E or FN+R or FN+T to see if the keyboard is discoverable via your device.