Assistance on Arduino Project

I had a lovely person help me with optimizing my code however, I am having one small problem. I am outputting my digital pin’s state to the webserver but when they are LOW they disappear from the webserver for some reason rather than unchecking the checkbox I created

void processRequest(EthernetClient& client, String requestStr) {
  Serial.println(requestStr);



  // Send back different response based on request string
  if (requestStr.startsWith("GET /status")) {
    Serial.println(F("polled for status!"));
    client.println(F("<p><strong>Bar Taps</strong></p>"));
    client.println(F("<hr />"));
    ProcessCheckbox(client);
    writeClientResponse(client, "STATUS OF TAPS");
  } else if (requestStr.startsWith("GET /reset")) {
    Serial.println(F("Room reset"));
    resetGame();
    writeClientResponse(client, "ok");
  } else if (requestStr.startsWith("GET /trigger")) {
    Serial.println(F("Network prop trigger"));
    onSolve();
    writeClientResponse(client, "ok");
  } else {
    writeClientResponseNotFound(client);
  }
}


/*
   HTTP helper functions
*/

void listenForEthernetClients() {
  // listen for incoming clients
  EthernetClient client = server.available();
  if (client) {
    Serial.println(F("Got a client"));
    // Grab the first HTTP header (GET /status HTTP/1.1)
    String requestStr;
    boolean firstLine = true;
    // an http request ends with a blank line
    boolean currentLineIsBlank = true;
    while (client.connected()) {
      if (client.available()) {
        char c = client.read();
        // if you've gotten to the end of the line (received a newline
        // character) and the line is blank, the http request has ended,
        // so you can send a reply
        if (c == '\n' && currentLineIsBlank) {
          processRequest(client, requestStr);
          break;
        }
        if (c == '\n') {
          // you're starting a new line
          currentLineIsBlank = true;
          firstLine = false;
        } else if (c != '\r') {
          // you've gotten a character on the current line
          currentLineIsBlank = false;

          if (firstLine) {
            requestStr.concat(c);
          }
        }
      }
    }
    // give the web browser time to receive the data
    delay(1);
    // close the connection:
    client.stop();
  }
}

void writeClientResponse(EthernetClient& client, String bodyStr) {
  // send a standard http response header
  client.println(F("HTTP/1.1 200 OK"));
  client.println(F("Content-Type: text/plain"));
  client.println(F("Access-Control-Allow-Origin: *"));  // ERM will not be able to connect without this header!
  client.println();
  client.print(bodyStr);
}


void writeClientResponseNotFound(EthernetClient& client) {
  // send a standard http response header
  client.println(F("HTTP/1.1 404 Not Found"));
  client.println(F("Access-Control-Allow-Origin: *"));  // ERM will not be able to connect without this header!
  client.println();
}

void outputCheckbox(EthernetClient& cl, bool checked, char* type) {
  
  cl.println(F("<input type=\"checkbox\" name=\"Tap2\" value=\"2\" onclick=\"submit();"));
  
  if ( checked) {
    cl.println(F("\"checked"));
  }
  
  cl.print(F(">"));
  cl.print(type);
  cl.println(F("</p>"));
}

void ProcessCheckbox(EthernetClient& cl)
{
  outputCheckbox( cl, digitalRead(inputPins[0]), "MGD 1" );
  outputCheckbox( cl, digitalRead(inputPins[1]), "MGD 2" );
  
 outputCheckbox( cl, digitalRead(inputPins[2]), "Coors 1" );
  outputCheckbox( cl, digitalRead(inputPins[3]), "Coors 2" );
  outputCheckbox( cl, digitalRead(inputPins[4]), "Coors 3" );
  outputCheckbox( cl, digitalRead(inputPins[5]), "Natural Light" );
  outputCheckbox( cl, digitalRead(inputPins[6]), "Miller Highlife" );
  outputCheckbox( cl, digitalRead(inputPins[7]), "Pabst" );
  outputCheckbox( cl, digitalRead(inputPins[8]), "Michelob" );
  
}

FULL CODE: Arduino Create