[ATP/FLEX] Why does Remote Access VPN only allow one user to be connected at a time?

Zyxel_Emily

Why does Remote Access VPN only allow one user to be connected at a time? When another user is connected, the current user must log off.

If you set subnet mask 192.168.18.0/32, only one IP address is available for pool of IKEv2 clients. It means only one IKEv2 client can be connected simultaneously to the site.
We suggest you configure a more wide range for the pool. For example, 192.168.18.0/24.