ZyWALL ATP configured L2TP VPN. Windows 10 doesn't connect.

I configured the L2TP VPN using: CONFIGURATION > Quick Setup > VPN Setup Wizard > VPN Settings for L2TP VPN Settings, and L2TP worked fine. Windows 10 was connecting.


And then I wanted to make sure that only certain users could connect. And created a group for VPN connection. In the Configuration > L2TP VPN > User, I specified a group for VPN connection:

And Windows 10 stopped connecting, error: "Unable to connect .... so the connection port is closed.

Phase 1 settings:
SA Life Time: 86400
Mode: Main
Proposal: 3DES-SHA1
Key Group: DH2

Phase 2 settings:
SA Life Time: 86400
Protocol: ESP
Encapsulation: Transport
Proposal: AES256-SHA1, AES128-SHA1, 3DES-SHA1
PFS: none

For L2TP connection "pre-shared key" and "user name and password" are used.

Configuring the built-in Windows 10 client: 


What could be the problem?