First time set up, torch won't fire

first time set up. followed the video. tried turning the torch on/off in mach3. no fire, flashes yellow. using razorweld 45. it has 2 ports in the front for the wiring that came with it. it says to use the rt port. i can’t get it to fire. i can pull the trigger and it fires, but not with the toggles.
i’m a beginner with all this, so any help would be great!