KISS is your friend when you have issues like this and don't have the experience to diagnose issues. So If you are not confident with the wiring then Go Back to Basics, remove the Rat's nest of wires from the BOB and just get one axis working, then rinse and repeat for each axis, checking as you go.

Then start adding other wiring like E-stop, limits, etc one at a time, again checking as you go. Don't bother with the enable as it's not really needed and just adds more complexity at this stage. You can always add it later along with monitoring the fault signals.