Why the device name of my Anchor is not displayed when I scan BLE devices with my ESP32?

I wanted to know if someone has already tried to pair BLE of the nrf52 on the dwm1001 with another device (for example ESP32).
I just want it to send the device name to the esp32. It worked well with the nrf connect app, the device name has also his own chracteristic uuid.
But with the ble_scan code of the esp32, i just have :
"Advertised Device: Name: , Address: d0:42:37:af:1c:2b, rssi: -52, serviceData: c ".
Anyone have any idea on how to fix the issue ?