Caputre portal, if one lan user does register, all other have free access

[avbox55]

I want to setup the following setup for our family

Lan: 192.168.22.0/24

Access to all lan adresses is open
Access from some machines (server) is too open
Capture portal to acces internet
Access a) with a valid user connection
Access b) with a valid voucher

Under captur portal and connection I added an entry

Interface: LAN
Authentication using: Local database, voucher
Disabling Concurrent user logins
Allowed addresses: IP of servers

I created the voucher. Everthing works so far, with one exception. If the first login is successfully done, there is no any further login request, all other have free access to internet. As long as I understand it, there must be for every new connection a login request.

[avbox55]

Ok I found out that it is a WLAN problem. Once the first machine gets on WLAN connected, then all other are too conected. Is it possible to have connection request on mac address?