Giga Display Shield SLS not working

[freethebeast]

Hi all,
trying everything but I got the same error every change I do. When I upload the sketch, the display is completely pixelated as immage pinned.
What I'm doing wrong?
If i comment everything except the lvgl code the display works fine, so it's a problem with my code for sure.

#include "Arduino_H7_Video.h"
#include "Arduino_GigaDisplayTouch.h"
#include "lvgl.h"
#include "ui.h"

#include <ArduinoJson.h>
#include "Communications.h"
#include "Index.h"
#include "FlipDot7Segments.h"

WiFiSSLClient clientSSL;

const int MAX_RETRY = 3;

String ssid_string;
String pass_string;

char ssid[50];  
char pass[50];

/* Insert resolution WxH according to your SquareLine studio project settings */
Arduino_H7_Video          Display(800, 480, GigaDisplayShield); 
Arduino_GigaDisplayTouch  Touch;


unsigned long previousMillis = 0; 
unsigned long currentMillis = 0; // Aggiungi questa linea
const long interval = 1000; 
const long interval2 = 5000; 




void setup() {
  Display.begin();
  Touch.begin();
  ui_init();

  Serial.begin(115200);
  Serial.println("Application Started");
  Serial1.begin(9600);

  ssid_string = String(lv_textarea_get_text(ui_SSID));
  pass_string = String(lv_textarea_get_text(ui_PASS));

  ssid_string.toCharArray(ssid, ssid_string.length() + 1);
  pass_string.toCharArray(pass, pass_string.length() + 1);

  connectToWiFi(ssid, pass);
  printWifiStatus();
  previousMillis = millis();
}

void loop() {

  /* Feed LVGL engine */
  lv_timer_handler();
  delay(5);

  unsigned long currentMillis = millis();

  if (clientSSL.available()) {
    StartIndexRequest(&clientSSL);
    if(currentMillis - previousMillis >= interval) {
      previousMillis = currentMillis;
      String data = "";
      unsigned long startTime = millis();
      do {
        data = read_response(&clientSSL);
      } while (data == "" && (millis() - startTime) < 10000);

      if ((millis() - startTime) < 10000) {
        if (data != "") {
          String json = get_json(data);
          String index = get_index(json);
          Serial.println("DATA:\n" + json + "\n----------------- END JSON");
          Serial.println("INDEX:" + index + "\n----------------- END INDEX");

          visualize(index.toInt());
        }
        Serial.println("----------------- START DELAY 5000");
        previousMillis = millis();
        while(millis() - previousMillis < interval2) {
          // do nothing
        }
        Serial.println("----------------- END DELAY");
      } else {
        Serial.println("TIMEOUT:" + (String)(millis() - startTime));
        clientSSL.stop();
      }
    }
  }

  if (WiFi.status() != WL_CONNECTED)
    connectToWiFi(ssid, pass);

  if (!clientSSL.connected())
    connectToServer();
}

void connectToServer() {
  if (!clientSSL.connected()) {
    int retries = 0;
    while (!clientSSL.connect(HOST_NAME, 443) && retries++ < MAX_RETRY) {
      if(currentMillis - previousMillis >= interval) {
        previousMillis = currentMillis;
        Serial.println("Connecting to server: " + (String)HOST_NAME);
      }
    }
    if (clientSSL.available())
      Serial.println("Connected to server: " + (String)HOST_NAME);
    else {
      Serial.println("Not connected to server: " + (String)HOST_NAME);
      WiFi.disconnect();
    }
    if(currentMillis - previousMillis >= interval) {
      previousMillis = currentMillis;
    }
  }
}