Go direct to the makers website and use their contact not the shop you got it from.
P setting are pretty much std for geared hubs.
P1 87.
P2 1.
P3 Pas; 0 for speed control, 1 for current control.
P4 Throttle; 0 always active, 1 pedal first activates throttle.
P5 12 Voltage 36v 5- 15.