Not compatible with wire-connected selfie sticks

A really great app, but Im sick of wireless bluetooth selfie sticks that dont work reliably. So I got a new one with cable connection which works fine with the standard Apple Camera app but unfortunately not with MoviePro. In MoviePro pushing the sefie sticks button leads to increasing the iphone speakers volume... Would be nice to get this problem fixed.

Saturn_V about MoviePro - Pro Video Camera, v5.4