@lesmalave Is it working now? As a test, I just tried to click that link and it did successfully download through the browser and then unzip on my machine.

Hello. Not sure if you managed to get this working yet, but if not, there is a ble library that ships with M5Stack Core2 Arduino install.

#include <BLEDevice.h>
on my computer this was installed at this location: .//Library/Arduino15/packages/m5stack/hardware/esp32/2.0.3/libraries/BLE/src/BLEDevice.h
Hence I did not have to install the package separately.
I have implemented a project using this just recently using a variety of BLE technology so confident that it works on at least my copy of Core2.

If you go to the docs link from the library link you posted (https://github.com/nkolban/ESP32_BLE_Arduino) you can see that the project has now been directly incorporated into Arduino. The lib version you may have downloaded may be out of date. You can find BLEDevice.h/BLEDevice.cpp on your machine and check against the main Arduino source.

Hope this helps?