Hello together

I connected my cameras (D5200/D7100) with qdsldashboard via above mentioned adapter.
But now it's not possible to release the shutter from an external timer or from the camera itself.

Is it really not possible in the combination with the WU-1a? 
Or do I need to change something inside the cameras?

I want to use the timer of my shoot_move_shoot slider.

Hopefully anybody can help me. 

Best regards from Lower Saxony Germany
Holger

Is this happening when Liveview is off too?

Thank you, now I switched off LV and it works.
I was sure that it was only a small stupid failure but I didn't find it.