Hotspot autologin cookie time setting

I just want users to be redirected to my portal without any kind of login.
So I set only one user auto-logged in my hs server.
But when multiple users try to connect to hs network, cookie does not let users to be redirected again, because the hs-user is already logged in!
I also uselessly tried to set http-cookie-lifetime to 20s
How to fix that?
config:

 /ip hotspot profile> print
Flags: * - default 
 0 * name="default" hotspot-address=0.0.0.0 dns-name="" html-directory=hotspot 
     rate-limit="" http-proxy=0.0.0.0:0 smtp-server=0.0.0.0 
     login-by=cookie,http-chap http-cookie-lifetime=1d split-user-domain=no 
     use-radius=no 

 1   name="hsprof1" hotspot-address=10.5.50.1 dns-name="arpanetwifi.it" 
     html-directory=hotspot rate-limit="" http-proxy=0.0.0.0:0 
     smtp-server=0.0.0.0 login-by=cookie,http-pap http-cookie-lifetime=20s 
     split-user-domain=no use-radius=yes radius-accounting=yes 
     radius-interim-update=received nas-port-type=wireless-802.11 
     radius-default-domain="" radius-location-id="" radius-location-name="" 
     radius-mac-format=XX:XX:XX:XX:XX:XX

Did you change the shared-users setting in “/ip hotspot user profile” to more than just 1?

yeah, it’s set 99 shared users.
but it does not work yet.

But when multiple users try to connect to hs network, cookie does not let users to be redirected again, because the hs-user is already logged in!

What does this mean? Does the new device display a login page or shows already logged in?
I have not tried this with multiple logins with a common username.

it means the new device shows already logged in and captive does not redirect anymore.

Are all your hotspot clients connect directly to the hotspot interface? Or do they connect to an AP and the AP routes the clients to the hotspot? In other words, do the users show different mac addresses?

yes, they are connecting through an AP (AP get internet access via wireless ptp bridge)

If the users all show up as the same mac address, like with a separate AP or repeater, and one client behind the AP/repeater logs in, then all clients behind that device are logged in.

This usually applies to devices that issue localnet ips to the clients, and the clients are masqueraded behind an interface.

How to solve this?

should I choose -masquerade-network=no- in /ip hotspot setup?