Which OBD adaptor are you all using. I've been using the Vgate iCar Wifi. I had a heck of a time getting it connected as opposed to my phone auto connecting to the cars wifi (which I'm not entirely sure I knew I had). The Bimmercode manual says to put the car into diagnostic mode by pressing the start/stop button 3 times which I did and the car said it was in the mode. I was able to code ASD off, but it told me that I couldn't access the lighting and a few other modules with the adapter I was using.
EDIT: I ordered this one as it says it was made for Bimmercode and is Bluetooth so it should be easier to connect
Bimmercode OBD adapter
Edit, Edit - this adaptor works perfectly with Bimmercode