Not sure how much help I will be but here is the link to what I did on my machine. The break out board is powered by a standard external 5 volt power supply for a cell phone charger if i remember correctly. The hall effect sensors have a power side and a signal side both with a ground. The power side is for the LED lighting and the signal side is triggered by the magnetic field. All six of my sensors are connected through telephone wire and connect through RJ-45 connectors to the breakout board. Then the breakout board is connected to the main Shapeoko 3 controller board. Hope this may help but familiar with the sensors you are using.
My guess is that you wired the sensors in normally open or normally closed mode and need the opposite. The wiring diagram on the link shows they can be wired both ways. I went through that aggravation on an emergency stop switch and it couldn’t be changed because of its design and I to purchase the alternate configuration. You may want to try switching that wiring and go with a 5 volt power supply - they are pretty cheap and see if that might help.
Hope something here helps. I by no means am an electronics wizard and the gentlemen I bought my sensors from helped me get mine all up and running. But then again he designed them for this specific application.