JhonnyD are you searching for the bluetooth reader in the main android settings, or going in to the Dudu vehicle settings and telling it there that you are using an OBDII reader? I have tried both ways with 3 different dongles, and nothing works for me, in Torque (pro) or the Dudu software itself.
When I try to connect via the Android Bluetooth Settings, it sees the adapters, but then says to ender "0000" in to the pairing page, but the head unit never goes any further. There is no pairing spot that I can enter any code. I can not enter "0000" anywhere so that way doesn't work, for me anyway.