Check your shutter speed, cant go over what your setting is (max is 320 and normal is 60) if you want you can put ur hand infront of the pop up flash and direct the light to the strobe or just block it by covering it with your hand at the end of your lens. btw, the strobes read infrared light, ive got the strobes working from 50m away. the tip is have the infrared reader (side of strobe, small red circle at the bottom) pointed at the pop up flash.
so check your shutter speed. and direction that the infrared receiver is facing.
in camera check the max speed sync.
if you r still having problems get PWs
if that does not help PM me