Hi again Cruz,
I've just sent you a personal message (PM) with information on adjusting the tension on the shifter cables of the Rohloff. (I have also included links to Owners Manuals on the Rohloff site.)
I could not attach a photo to my PM, but please see below, a photo of page 9 of the "Short Version - Owners Manual, Rohloff Speedhub/514". These are the instructions for changing the tension of the shifter cables.
Good luck!
John