Firebeetle ESP32 + DFR 0531 problem with demo-sketch

#include "Arduino.h"
#include "DFRobot_IL0376F_SPI.h"
DFRobot_IL0376F_SPI eink;

#define EINK_CS  D3
#define Font_CS  D6
#define EINK_DC  D8
#define BUSY     D7

void setup(void)
{
    Serial.begin(115200);
    //Select the corresponding pins
    eink.begin(EINK_CS, Font_CS, EINK_DC, BUSY);

    //Clear the screen and display white-
    eink.fillScreen(WHITE);
    //Displays a string, red font
    eink.disString(12,12,1,"DFRobot EINK 1234567890,[email protected]#$%^&*()-+=",RED);
    //Refresh screen display
    eink.flush();
    delay(3000);

    //Displays a string, red font
    eink.disString(12,48,1,"DFRobotThree-color electronic ink screen test program",BLACK);
    //Refresh screen display
    eink.flush();
}

void loop(void)
{
    delay(8000);
}