Hello, why i don't see my wifi device?
I'm use a USB Realtek Semiconductor Corp. RTL8812AU 802.11a/b/g/n/ac 2T2R DB WLAN Adapter without problems.
My driver: https://github.com/aircrack-ng/rtl8812au
nmcli was my command-line tool for controlling NetworkManager by installing Debian 10 Buster.
Install Guide for OMV:
Install OMV5 on Debian 10 (Buster)
Greets
openmedianer