measurement - How to connect bathroom scale (arduino+hx711+spark load connector)

Im a new user in the electronic world. I tried to hack my bathroom weight scale but no success. There is a great tutorial which I followed:

https://www.youtube.com/watch?v=iywsJB-T-mU

my parts:

Could somebody who has more experience take a look at my solution?

I checked with multimeter and all wires are ok.

to save place I showed only one connected load sensor but 3 next I connected in the same way.

Im getting only:

one reading:    0.0 | average:  0.0
0
one reading:    0.0 | average:  0.0
0

What can be a problem? Im trying to do a whole week with different arduinos and no success :(

code which Im using:

#include "HX711.h"

#include "soc/rtc.h"

HX711 scale;


void setup() {
  Serial.begin(115200);
  rtc_clk_cpu_freq_set(RTC_CPU_FREQ_80M);
  Serial.println("Diska");


  Serial.println("Initializing the scale");
  // parameter "gain" is ommited; the default value 128 is used by the library
  // HX711.DOUT - pin #A1
  // HX711.PD_SCK   - pin #A0
  scale.begin(26, 25);


  Serial.println("Before setting up the scale:");
  Serial.print("read: \t\t");
  Serial.println(scale.read());         // print a raw reading from the ADC


  Serial.print("read average: \t\t");
  Serial.println(scale.read_average(20));   // print the average of 20 readings from the ADC

  Serial.print("get value: \t\t");
  Serial.println(scale.get_value(5));       // print the average of 5 readings from the ADC minus the tare weight (not set yet)

  Serial.print("get units: \t\t");
  Serial.println(scale.get_units(5), 1);    // print the average of 5 readings from the ADC minus tare weight (not set) divided
  // by the SCALE parameter (not set yet)


  scale.set_scale(233.82);    // this value is obtained by calibrating the scale with known weights; see the README for details
  scale.tare();                     // reset the scale to 0

  Serial.println("After setting up the scale:");

  Serial.print("read: \t\t");
  Serial.println(scale.read());                 // print a raw reading from the ADC

  Serial.print("read average: \t\t");

  Serial.println(scale.read_average(20));       // print the average of 20 readings from the ADC

  Serial.print("get value: \t\t");
  Serial.println(scale.get_value(5));       // print the average of 5 readings from the ADC minus the tare weight, set with tare()

  Serial.print("get units: \t\t");
  Serial.println(scale.get_units(5), 1);        // print the average of 5 readings from the ADC minus tare weight, divided
  // by the SCALE parameter set with set_scale

  Serial.println("Readings:");

}

void loop() {
  Serial.print("one reading:\t");
  Serial.print(scale.get_units(), 1);
  Serial.print("\t| average:\t");
  Serial.println(scale.get_units(10), 1);

  int ww = (int)(scale.get_units(10) + 0.5);
  Serial.println(ww);



  scale.power_down();                   // put the ADC in sleep mode
  delay(100);
  scale.power_up();
}