Dont see anything wrong as such. When you look at the diagnostics page
are any of the LEDs lit for the Home or limits?
When you press any of the switches do all the LEDs light?
Have you tried pressing all switches to make sure the LEDs light?
Does your homing work? when you press Ref all you z axis should move towards the switch, hit it then reverse a bit and stop, your Y should then do that and lastly your X.
Hood