Web auth. is not shown

Hi 

I try to configure pass-through auth with web auth. but web auth. is not shown

1. i already designed interface for web auth. and enable web-authentication

[edit interfaces ge-0/0/0]
root# show
unit 0 {
family inet {
address 10.3.0.137/24 {
preferred;
}
address 10.3.0.138/24 {
web-authentication http;
}
}
}

2. I've configured policy 

policy Captive-required {
match {
source-address any;
destination-address any;
application any;
}
then {
permit {
firewall-authentication {
pass-through {
access-profile profile1;
web-redirect;
}
}
}
log {
session-init;
session-close;
}
count;
}
}

3. My profile is tied with AD. Now AD status is connected

4. Error page as below