Can work on my iPhone but cannot work on my laptop win 10

[Folnia]

On the laptop it shows they are paired and connected, but nothing happend...nothing was typed in the text I opened.
But it worked with my iphone.

One stange thing: I used an BLE assitant on win 10 (BLECOMM) and used the pairing fuction , then it worked.

ESP32-WROOM-32D
ESP32-BLE-KEYBOARD 0.3.2

#include <Arduino.h>
#include <BleKeyboard.h>
 
#include <wifi.h>
//#define USE_NIMBLE


BleKeyboard myKeyboard("我的ESP32board","Espressif",100);
 

void setup() {
  // put your setup code here, to run once:
Serial.begin(115200);
myKeyboard.begin();
  
}

void loop() {
  
  if (myKeyboard.isConnected())
    {       
    myKeyboard.print("hello"); 
    delay(3000);    
    //myKeyboard.press(KEY_NUM_ENTER);
    //delay(1000);
    myKeyboard.releaseAll();
    Serial.println("pressed");    
    }

}