Just looking at your picture, I already noticed something wrong. As I said, check your connections are correct!.... If you look at your bottom plugs they are all plugged in the same way, brown on the bottom, red middle and orange on top.
The way they come out of the naza is as follows.
Brown is -
Red is +
Orange is Signal
It would appear the top plug on its own (AUX2) I presume is upside down according to your sticker on top, your X2 plug should be orange on the bottom and brown on top. hope you did not do any damage, and I hope that is all that is out of place.