Falcon 2 - 40W keeps reverting to roller engraving when trying to engrave flat

I hooked up the rotary attachment to the Falcon 2 - 40w but couldn’t get it to work so I removed it and plugged the cable back into the Y axis stepper motor. Now when I try to engrave something flat as per normal it tries to engrave it as if there is a roller attached and the engraving comes out scrambled. Why?

Getting the connector off and on the Y axis stepper is difficult, bad engineering. I suspect one of the four pins is not being made. pull the connector and carefully look at the pins on both of the connector haves.