FreeBSD won't see a specific bluetooth device

From: Dmitry N. Medvedev <dmitry.medvedev_at_gmail.com>
Date: Wed, 16 Aug 2023 12:24:50 UTC
good morning!

*the context*:
1. there is an HP Z420 desktop with FreeBSD 13.2-RELEASE-p2
2. there is a dell laptop with windows
3. there is a macbook pro
4. there is a bluetooth apple keyboard
5. there is an Advantage 360 Pro bluetooth keyboard

*the problem*:
using the *hccontrol -n ubt0hci inquiry* command I can list all the
bluetooth devices, but the Advantage 360 Pro.

This I cannot understand. How can the said keyboard avoid being listed?

I am struggling to pair the Advantage 360 Pro to my FreeBSD desktop.

Literally any help/ideas/thoughts are welcome!

With kind regards,
Dmitry N. Medvedev

Tel.:
 +49 176 65213116