Thanks for your input.
Yes it does seem a little strange, however given that we have technically only borrowed the robot from our distributor for a project at my university I think I will just let it be, as we will have to return it at some point.
This could also be why the option is not activated, as we just received it on a pallet and it has not been installed as part of a finished product / cell.
The main project it is used for, does also not need the valve, it was just for a small side project and small demo, so I don't think I will use more energy and time on this matter, given the main project does not need it.