You use the Back Up shifter? an 8mm wrench on the end of the hub shift sequencing shaft?
[NB Pg 99 of manual there are 2 small coil springs to lose if you tear it down as far as pictured above the
Attention! banner in the top left of that page.]
If that works then the issue is with the cables and parts up to that point
You got the bayonet connectors in bare cable Internal or the Shift box, External shifting mech Type..??
Available on line is the entire Rohloff Owners Manual /Handbuch.
http://www.rohloff.de/en/service/dow...documentation/