[SOLVED]SIM7600 Module Power up by Arduino Uno doesn't work

Am using SIM7600X 4G HAT with Arduino Uno

I follow to manual to Power up the module and it works well, The NET light flashing.

But when I connect to Arduino Uno and use DigitalPin 2 write (High -> Delay500ms -> Low) for "power on pulse" it doesn't work, The NET light still not flashing.

My code:

#include <Waveshare_SIM7600.h>
// Pin definition
int POWERKEY = 2;

char phone_number[] = "XXX";      //Store the phone number you want to call

void setup() {
  Serial.begin(9600);
  sim7600.PowerOn(POWERKEY);
  sim7600.PhoneCall(phone_number);
}
  
void loop() {

}

code from Waveshare (Waveshare_SIM7600.h):

/**************************Power on Sim7x00**************************/
void Sim7x00::PowerOn(int PowerKey = powerkey){
   uint8_t answer = 0;

  Serial.begin(9600);

  // checks if the module is started
  answer = sendATcommand("AT", "OK", 2000);
  if (answer == 0)
  {
    Serial.print("Starting up...\n");
    
    pinMode(PowerKey, OUTPUT);
    // power on pulse
    digitalWrite(PowerKey, HIGH);
    delay(500);
    digitalWrite(PowerKey, LOW);
    
    // Stuck in below loop because Send AT command and no response ///////
    // Becuase NET light not flashing (not connect) //////////////////////

    // waits for an answer from the module
    while (answer == 0) {     // Send AT every two seconds and wait for the answer
      answer = sendATcommand("AT", "OK", 2000);
      delay(1000);
    }

  }

  delay(5000);

  while ((sendATcommand("AT+CREG?", "+CREG: 0,1", 500) || sendATcommand("AT+CREG?", "+CREG: 0,5", 500)) == 0)
    delay(500);
}