Help, please. View the network interface on the client on MacOS.

I have installed VPN Server inside my Synology NAS.
I have configured the openVPN option and downloaded the configuration profile.
I installed the openVPN client on MacOS, and imported the profile.
I have access to the NAS remotely.
So far so good.

As I need other people to access that NAS server, I would like to see them in a sort of local network. This is how it used to work with ZeroTier or TailScale. But in the new Synology DSM update, I can't install third party packages.

The thing is, I need please help me to see from my computer to the rest of the people connected to the same network. I use an App called "LanScan", but MacOS does not recognise some network interface used by the openVPN client.

There is an option inside the VPN server that I have installed on the NAS that says: "Allow clients to access the server's LAN". But I don't know what more steps I need to do.

I hope I have explained myself well. Best regards and thanks.

The issue names no source file or test; start by reproducing the imported OpenVPN profile on macOS with the NAS setting that allows LAN access enabled. Check how LanScan sees the client connection and document a reproducible configuration or behavior, or identify the missing information needed to confirm a client defect.