Okay, there's still a way to test it, then. You can assign the KL25Z's on-board LEDs as outputs. That will give you the same type of visual feedback to test DOF as what I was proposing above, but without having to connect anything external.
Leave your DOF configuration as it is, with port 32 set to ZB Launch Ball.
Go to the Pinscape config tool Settings page. Go to the Outputs section. Click in the output box for port 32. Click GPIO Digital Out on the right side, then click PTB18 on the left side. Accept the warning (click "Yes").
This will assign Port 32 to control the red on-board LED on the KL25Z.
To make the test results easier to interpret, also do the following:
Click on the output box for port 31. Click GPIO Digital Out on the right, then click PTB19 on the left. Accept the warning. Click on the port 30 output box. Click GPIO Digital Out on the right, then click PTD1 on the left. Accept the warning.
Program the KL25Z.
The normal diagnostic flashes on the KL25Z will no longer occur - the LED will be completely dark now. This is nothing to worry about; it's normal given the new settings. It's because you've taken over the LED for use as three output ports, red=port 32, green=port 31, blue=port 30. We'll undo it later so that you get your normal diagnostic flashes back, after we're done with the test.
Now do that same VP test I described above. Run a PLUNGER table. The KL25Z LED should remain dark. Run a LAUNCHER table. The KL25Z red LED should turn on.
If that's not what happens, the problem is in the DOF setup. Leave the KL25Z LED ports set like they are for now so that we can proceed to debug your DOF config.
If the LED display shows up as expected, your DOF setup is fine, so you can undo the test LED setup.
Once we get your DOF config debugged, you can undo the LED output ports by going back to the Setting page in the config tool. For each of output ports 30, 31, and 32, click on the output port box, click the Virtual Out button on the right, and click the Virtual button in the middle. That will disconnect the ports from the diagnostic LEDs, allowing the diagnostic flashes to return to normal.