I read in the Support forum that it is mostly due to double MAC addresses that the BD Central does not display all devices correctly. (Not for me either)
Here might be a solution:
After checking with "ipconfig /all" Bitdefender just uses the last MAC address from ipconfig. This refers to a deactivated "Bluetooth Personal Area Network Device" and in no way to the activated Network Devices like the "Intel Gigabit Network Connection".
Wouldn't it make sense to use activated Network Devices in BD Central and not just the last Network Device from ipconfig to exclude duplicate Mac addresses and to display all devices in BD Central correctly?
Furthermore, this error also causes an incorrect number of used devices to be displayed. The correct evaluation of the used licenses should therefore also be in the interest of Bitdefender.