Reply to Trakor s4 and Pro 2 problem

Hi guys my traktor is having a little problem for some time now each time i try to start it up its just seems to be opening but it just dont open I click it some times and it pop ups the sign that i already have an open traktor but if i dont continue clicking it wont appear any traktor
this happenss with the s4 version and the pro 2 version
Whats wrong?