Is there a way to make clients connected from windows command line openvpn still have logs?
Use
--log or
--log-append options.
On my server, is there a way to track logs more advanced?
I need to see at what time / which client connected / how much bandwidth used?
"verb 3" is enought to track client connect and disconnect time. For the bandwith - the clients are sharing the common bandwith so if one client is connected, then the full bandwith is used.