Arduino Project Issues with IF Statements

Currently, I am making a project for my school and I am having an issue when the code runs multiple times. I am using an Arduino Mega 2560. The project I am doing is making a safe/box that requires a PIN to open it. In order of how things are supposed to operate it follows:

1. The IR receiver receives a signal from a remote that activates the signal. When the system is active it turns on a blue LED. When the system is inactive it does nothing.
2. When the system is active, it can read inputs from the 4x4 pin pad. If it gets a wrong code it turns on a red LED then clears the data so it can take in the code again. If the correct code is given then a green LED is turned on and turns a servo motor 90 degrees.
3. After the correct code is turned on, a button is pressed to return the motor to 0 degrees and deactivates the system.

The issue is that after the button is pressed I cannot reactivate the system. It basically becomes a 1 and done. The code for the project can be found below.

#include <Keypad.h>
#include <Servo.h>
#include <IRremote.h>

Servo servo;

const byte ROWS = 4; 
const byte COLS = 4; 

#define Passcode_L 5

char Data[Passcode_L];
char Master[Passcode_L]="14B6";

char hexaKeys[ROWS][COLS] = {
   {'1', '2', '3', 'A'},
   {'4', '5', '6', 'B'},
   {'7', '8', '9', 'C'},
   {'*', '0', '#', 'D'}
 };
  
byte rowPins[ROWS] = {22, 24, 26, 28}; 
byte colPins[COLS] = {30, 32, 34, 36}; 
byte data_count = 0;
char customKey;
  
Keypad customKeypad = Keypad(makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS); 

const int led_blue = 23;
const int led_green = 25;
const int led_red = 27;


const int BUTTON = 47;
int BUTTONstate = 0;


const int RECV_PIN = 44;
int togglestate = 0;
IRrecv irrecv(RECV_PIN);
decode_results results;

void setup(){
  Serial.begin(9600);
  irrecv.enableIRIn();
  servo.attach(38);
  servo.write(0);
  pinMode(led_blue, OUTPUT);
  pinMode(led_green, OUTPUT);
  pinMode(led_red, OUTPUT);
  pinMode(BUTTON, INPUT);
}
    
void loop(){
  char customKey = customKeypad.getKey();

  BUTTONstate = digitalRead(BUTTON);
  if (irrecv.decode(&results)){
    switch(results.value){
      case 0xFFA25D:
      // Toggle BLUE LED On or Off
      if(togglestate==0){
        digitalWrite(led_blue, HIGH);
        togglestate=1;
      }
      else {
        digitalWrite(led_blue, LOW);
        togglestate=0;
      }
    break;  
    }
    irrecv.resume();
  }
  
  if (customKey){
    Data[data_count] = customKey;
    data_count++;
  }
  
  if (data_count == Passcode_L - 1 && togglestate==1) {
     if (!strcmp(Data, Master)) {
      //password is correct
      digitalWrite(led_green, HIGH);
      delay(500);
      servo.write(90);
      delay(1500);
      digitalWrite(led_green, LOW);
     }
     else {
      // Password is incorrect
      digitalWrite(led_red, HIGH);
      delay(1000);
      digitalWrite(led_red, LOW);
    }
    clearData();
 }
 
 if (BUTTONstate !=0){
  servo.write(0);
  togglestate=0;
  digitalWrite(led_blue, LOW);
  }


  
}

void clearData() {
  // Go through array and clear data
  while (data_count != 0) {
    Data[data_count--] = 0;
  }
  return;
}