There are three things that need to be done to use the bluetooth module.
The bluetooth module is disabled by default. Android devices can work with the combo, mouse or keyboard devices, or with the game controller mode. Most people use it with the mouse and keyboard (combo) mode. The best authentication mode is mode 2.
In QMP, it looks like this:
The next thing is to download a configuration file that will use the bluetooth, like this one:
Once the bluetooth preference settings and the config file are installed, unplug the quadstick and plug it back in so the bluetooth module can be initialized at power up, then "pair" (connect) the quadstick, which should show up as "Quadstick-####". Select the android mouse and keyboard config file using the side tube and you should be good-to-go.
To make sure your quadstick has the bluetooth option, look for a B in the serial number, a blue dot on the back, or a serial number before 2106-3696.