i can't find my EL 400 RGB back in showcontroller,

Well, the Laserworld EL-400RGB is a basic, DMX only laser, which cannot be controlled via laser control software. You need either an ILDA capable laser and an external ShowNET interface with it, or a more professional laser with built-in ShowNET mainboard (Diode Series units and higher)
To control theLaserworld EL-400RGB you can use any DMX control software or controller, but functionality is limited to what is factory stored in the laser.