Ultratronics PCB does not communicate with PC (MK4)

[peterartechno]

I am building a large printer for which I use MarlinKimbra4. I use a Ultratronics V1.0 Pro board. . I have no problems uploading the file to the board (with IDE, using the Arduino DUE programming port), but after that my progress stops.

Information about the printer:
double x-axis, single y-axis, double z-axis. (x-y-z; 1400-800-500 mm printing bed).
Servo motors with an ES-D808 driver, who do not need a special stepper driver.

I tried to fill in the configurator on the marlinkimbra website to make a special configured file (configurations_overall.h) but I get stuck with the stepper drivers, since I have seperate drivers (the ES-D808). I will attach the layout of my board, the size of the printer and the files of the code.

What I want is that the printer works (obviously) but more importantly, my board does give me signals, but does not move my motors.

I do not understand why the MK4 firmware does not 'do anything' when I send a command. I have a feeling that the code is not correct, but I can not find out which part.
mk4 files.zip

It would be of great help if anybody can help me. If you have any questions, please let me know. I am working on this printer full-time so I will be checking any answers regularly.

Update: used new FW from MK4 and that gave me signals, but no movement yet