Void loop is not looping

Hello all,
I am working on a project with a fingerprint scanner to move a dc motor. But when I try to identify a fingerprint in the loop function, it doesn't loop. I tested it with println("loop") command to see if it's actually not looping and the line showed once. Please help, what could be the problem?

#include "FPS_GT511C3.h"
#include "SoftwareSerial.h"

// set up software serial pins for Arduino's w/ Atmega328P's
// FPS (TX) is connected to pin 4 (Arduino's Software RX)
// FPS (RX) is connected through a converter to pin 5 (Arduino's Software TX)
FPS_GT511C3 fps(4, 5); // (Arduino SS_RX = pin 4, Arduino SS_TX = pin 5),
//H-Bridge pins to control the motor
#define IN1 6
#define IN2 7

void setup()
{
	Serial.begin(9600); //set up Arduino's hardware serial UART
  pinMode (IN1, OUTPUT); 
  pinMode (IN2, OUTPUT);
	delay(100);

  fps.Open();
  fps.SetLED(true);
	//Enroll();          //begin enrolling fingerprint

  Serial.println("setup");
}

void loop() 
{
  Identify();
  delay(5000);
  Serial.println("loop");
}

void Identify()
{
  fps.SetLED(true);
  waitForFinger();
  // Identify fingerprint test
  if (fps.IsPressFinger())
  {
    fps.CaptureFinger(false);
    int id = fps.Identify1_N();
    
    if (id <20) //<- change id value depending model you are using
    {//if the fingerprint matches, provide the matching template ID
      Serial.print("Verified ID:");
      Serial.println(id);
      
      //turning the motor counterclockwise
      digitalWrite(IN1, LOW);
      digitalWrite(IN2, HIGH);
      delay(5000);
      //stop
      digitalWrite(IN1,HIGH);
      delay(1000);
      //turning the motor clockwise
      digitalWrite(IN2,LOW);
      delay(5000);
      //stop
      digitalWrite(IN1,LOW);
      delay(1000);
    }
    else
    {//if unable to recognize
      Serial.println("Finger not found");
    }
  }
  else
  {
    Serial.println("Please press finger");
  }
  delay(100);
}

void Enroll()
{
	// Enroll test

	// find open enroll id
	int enrollid = 0;
	bool usedid = true;
	while (usedid == true)
	{
		usedid = fps.CheckEnrolled(enrollid);
		if (usedid==true) enrollid++;
	}
	fps.EnrollStart(enrollid);

	// enroll
	Serial.print("Press finger to Enroll #");
	Serial.println(enrollid);
	while(fps.IsPressFinger() == false) delay(100);
	bool bret = fps.CaptureFinger(true);
	int iret = 0;
	if (bret != false)
	{
		Serial.println("Remove finger");
		fps.Enroll1(); 
		while(fps.IsPressFinger() == true) delay(100);
		Serial.println("Press same finger again");
		while(fps.IsPressFinger() == false) delay(100);
		bret = fps.CaptureFinger(true);
		if (bret != false)
		{
			Serial.println("Remove finger");
			fps.Enroll2();
			while(fps.IsPressFinger() == true) delay(100);
			Serial.println("Press same finger yet again");
			while(fps.IsPressFinger() == false) delay(100);
			bret = fps.CaptureFinger(true);
			if (bret != false)
			{
				Serial.println("Remove finger");
				iret = fps.Enroll3();
				if (iret == 0)
				{
					Serial.println("Enrolling Successful");
				}
				else
				{
					Serial.print("Enrolling Failed with error code:");
					Serial.println(iret);
				}
			}
			else Serial.println("Failed to capture third finger");
		}
		else Serial.println("Failed to capture second finger");
	}
	else Serial.println("Failed to capture first finger");
}
void waitForFinger(){
  static int timer; //contains timeout counter
  timer = 0; //resets the timer everytime this function starts
  while(!fps.IsPressFinger()){ //timeout of eight seconds
    timer++;
    delay(100); 
    if (timer>=80 && !fps.IsPressFinger()){
      fps.SetLED(false);
    }
  } 
  timer = 0; //resets the timer everytime this function ends
}

Your code is probably stuck in one of the functions called from loop(). Print the name of the function on entry to each of them

Did you add serial print to this to see where it gets stuck?

ok thanks, i will try that

    if (timer>=80 && !fps.IsPressFinger()){
      fps.SetLED(false);
      break;  //////// You forgot to put in this line.
    }

Without the 'break' it turns off the LED after the 'timeout' but continues the 'while' loop.