Currently working on a keypad doorlock mechanism (Similar to this project http://www.electronoobs.com/eng_arduino_tut11.php). The issues with the code I have is that the keypad attached to my board does not allow me to type the full password. Only the first value displayed on the LCD scree moves but no value is excepted.Also the buttons used to open and close the servo motor do not operate as intended.Below is the code I currently have:

//LCD config
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,20,4);

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

//Variables
int mot_min = 90;   //min servo angle  (set yours)
int mot_max = 180; //Max servo angle   (set yours)
int character = 0;
int activated =0;
char Str[16] = {' ', ' ', ' ', ' ', ' ', ' ', '-', '*', '*', '*', ' ', ' ', ' ', ' ', ' ', ' '};  
//               0    1    2    3    4    5    6    7    8    9    10   11  12    13   14  15

//Pins
Servo myservo;
int buzzer=11;     //pin for the buzzer beep
int external = 12; //pin to inside open
int internal = 13; //pin to inside close

//Keypad config
const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns
//define the cymbols on the buttons of the keypads
char hexaKeys[ROWS][COLS] = {
 {'1','4','7','*'},
 {'2','5','8','0'},
 {'3','6','9','#'},
 {'A','B','C','D'}
 };
 byte rowPins[ROWS] = {5, 4, 3, 2}; //connect to the row pinouts of the keypad
 byte colPins[COLS] = {9, 8, 7, 6}; //connect to the column pinouts of the keypad

 //initialize an instance of class NewKeypad
 Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS); 

void setup(){
myservo.attach(10); //attach the servo to pin D10
pinMode(buzzer,OUTPUT); 
pinMode(external,INPUT);
pinMode(internal,INPUT); 
//Init the screen and print the first text
lcd.init();
lcd.backlight();
lcd.clear();
lcd.print("    PASSWORD");
lcd.setCursor(0,1);
lcd.print("      -***     ");
//put the servo in the close position first
myservo.write(mot_min);  

}

void loop(){
///////////////EMERGENCY OPEN/CLOSE/////////
if (digitalRead(external) == LOW) // if (digitalRead(external)) 
{
 myservo.write(mot_max);
  lcd.clear();
  lcd.setCursor(2,0);
  lcd.print("INSIDE  OPEN");
  activated = 2;
  analogWrite(buzzer,240);
  delay(250);
  analogWrite(buzzer,200);
  delay(250);
  analogWrite(buzzer,180);
  delay(250);
  analogWrite(buzzer,250);
  delay(250);
  analogWrite(buzzer,LOW);
 
  
  lcd.clear();    
  lcd.setCursor(4,0);
  lcd.print("WELLCOME");
  
  lcd.setCursor(2,1);
  lcd.print("ELECTRONOOBS");
  

  lcd.clear();    
  lcd.setCursor(3,0);
  lcd.print("DOOR  OPEN");
  lcd.setCursor(2,1);
  lcd.print("ELECTRONOOBS");
  delay(500);

  }

  if (digitalRead(internal) == LOW) // if (digitalRead(internal)) 
  {
  myservo.write(mot_min);
  activated = 0;
  character=0;
  Str[6]= '-';
  Str[7]= '*'; 
  Str[8]= '*'; 
  Str[9]= '*';
  Str[10]= ' ';   
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("    PASSWORD");    
  lcd.setCursor(0,1);
  lcd.print(Str);
  }

   ///////////////KEYPAD OPEN/CLOSE////////////  
  char customKey = customKeypad.getKey(); //this function reads the presed key

  if (customKey != NULL){ // if (customKey) 

  if (character ==0) 
{  
Serial.println(customKey);
Str[6]= customKey;   
lcd.clear();
lcd.setCursor(0,0);
lcd.print("    PASSWORD");    
lcd.setCursor(0,1);
lcd.print(Str);

}

if (character ==1) 
{  
Serial.println(customKey);
Str[7]= customKey;   
lcd.clear();
lcd.setCursor(0,0);
lcd.print("    PASSWORD");    
lcd.setCursor(0,1);
lcd.print(Str);

}

if (character ==2) {
{  
Serial.println(customKey);
Str[8]= customKey;   
lcd.clear();
lcd.setCursor(0,0);
lcd.print("    PASSWORD");    
lcd.setCursor(0,1);
lcd.print(Str);

}

if (character ==3) 
{  
Serial.println(customKey);
Str[9]= customKey;   
lcd.clear();
lcd.setCursor(0,0);
lcd.print("    PASSWORD");    
lcd.setCursor(0,1);
lcd.print(Str);

}

if (character ==4)
{  
Serial.println(customKey);
Str[10]= customKey;
activated=1;

}
character=character+1;
}

if (activated == 1)
{
/*Change your password below!!! 
Change each of Str[6], Str[7], Str[8], Str[9]*/

// if (Str[10] = 'A' && ...)
if(Str[10]=='A' && character==5 && Str[6]=='3' && Str[7]=='0' && Str[8]=='0' && Str[9]=='7' )
{
  myservo.write(mot_max);
  lcd.clear();
  lcd.setCursor(4,0);
  lcd.print("ACCEPTED");
  activated = 2;
  analogWrite(buzzer,240);
  delay(250);
  analogWrite(buzzer,200);
  delay(250);
  analogWrite(buzzer,180);
  delay(250);
  analogWrite(buzzer,250);
  delay(250);
  analogWrite(buzzer,LOW);
  delay(1000);
  
  lcd.clear();    
  lcd.setCursor(4,0);
  lcd.print("WELLCOME");
  delay(500);
  lcd.setCursor(2,1);
  lcd.print("ELECTRONOOBS");
  delay(1000);

  lcd.clear();    
  lcd.setCursor(3,0);
  lcd.print("DOOR  OPEN");
  lcd.setCursor(2,1);
  lcd.print("ELECTRONOOBS");
  
}
else
{
  lcd.clear();    
  lcd.setCursor(1,0);
  lcd.print("PASSWORD ERROR");
  lcd.setCursor(3,1);
  lcd.print("TRY  AGAIN");
  analogWrite(buzzer,150);
  delay(3000);
  analogWrite(buzzer,LOW);
  character=0;
  Str[6]= '-';
  Str[7]= '*'; 
  Str[8]= '*'; 
  Str[9]= '*';
  Str[10]= ' ';
  activated = 0;
  lcd.clear();    
  lcd.setCursor(4,0);
  lcd.print("PASSWORD");
  lcd.setCursor(0,1);
  lcd.print(Str);   
  }
 }
 if (activated == 2)
 {
 if(customKey == 'B' )
 {
  myservo.write(mot_min);
  activated = 0;
  character=0;
  Str[6]= '-';
  Str[7]= '*'; 
  Str[8]= '*'; 
  Str[9]= '*';
  Str[10]= ' ';   
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("    PASSWORD");    
  lcd.setCursor(0,1);
  lcd.print(Str);
 
  }
  }  
  }
  }