Mega board with Atmega chip won't print to oled

[pb21]

I have a sketch that works perfectly with the Arduino r4 and Giga R1 but when I try to send a message to the waveshare 1.5 inch white display using the SSD1327 with the Elegoo Mega with the Atmega 2560 chip (ATMEGA2560 16U-TH 355E3F 23424GD)and even the Keyestudio with the Atmega chip neither board will print to the oled display. Each board can see the hardware (using I2C) scanner. Here follows the sketch:

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1327.h>

// Define the I2C address of the OLED
#define OLED_I2C_ADDRESS 0x3D

// Create SSD1327 display object for I2C
Adafruit_SSD1327 display(128, 128, &Wire, -1); // -1 means no reset pin is used

void setup() {
  // Initialize serial communication for debugging
  Serial.begin(9600);
  Serial.println("Initializing SSD1327 OLED...");

  // Set I2C clock speed (100 kHz for compatibility)
  Wire.begin();
  Wire.setClock(100000); // Reduce I2C speed to 100 kHz if necessary

  // Initialize the OLED display
  if (!display.begin(SSD1327_I2C_ADDRESS, OLED_I2C_ADDRESS)) {
    Serial.println("SSD1327 OLED initialization failed!");
    while (1); // Halt if initialization fails
  }
  Serial.println("SSD1327 OLED initialized successfully!");

  // Clear the display and show a test message
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SSD1327_WHITE);
  display.setCursor(0, 0);
  display.println("Hello, I2C!");
  display.println("Arduino Mega");
  display.display();
  delay(2000);

  // Draw a test shape
  display.clearDisplay();
  display.drawRect(10, 10, 108, 108, SSD1327_WHITE); // Draw rectangle
  display.fillCircle(64, 64, 20, SSD1327_WHITE);     // Draw filled circle
  display.display();
}

void loop() {

}

I am using 4.7k pull up resistors on the sda and scl lines.
I am not sure why this is happening but assistance to resolve it would be welcome. I did a search on the forum and found one case of this but with no resolution.

Regards in advance

[b707]

Please clarify the setup - how many screens do you use?

Why do you initialize a display with a two address:

@pb21

if (!display.begin(SSD1327_I2C_ADDRESS, OLED_I2C_ADDRESS)) {

Where the SSD1327_I2C_ADDRESS is defined?