The only weird thing it is right now that no matter if I press the master switch or leave it unpressed everything works fine. I thought if I release the master switch then nothing will work

 

Do you have to set up the master switch as an estop input?

Brett

No. Estop is set up on different input.

The C10 I am using came with a very small single strand wire installed as a jumper between the EN and GND terminals. If this connection is open, all outputs should be disabled.

Russ

That's where I connect the master switch as per wiring diagram. But when I disconnect it it still moving the motors

Remove everything from those 2 terminals and try it.
There could be something goofy with your switch or wiring.
Russ

...really, just remove everything from the EN terminal.
There might be something else connected to and relying on the GND terminal.

I will try that later after work.