CAN-Bus autosteer for Massey Ferguson 6616

Hi there,
I am in the process of installing the AGopen GPS steering system on our MF 6616. I already have all the components together and already use them as a manual parallel driving aid. Unfortunately, the two buttons on the holm that activate the steering system are gray and nothing happens when I press them. However, the tractor is definitely Autosteer ready, as it has installed Speedsteer and the steering angle sensor on the front axle. The tractor has installed the glass roof for front loader work, could it be that some cables or an activation are still missing?
I would be very grateful for any help!
Greets Johannes

Can you let me know which connector did you connected your Can bus shield?

I connected the Can bus shield to the X230 connector, which is located under the seat on the right.