multiple IKE using same gateway?

Hi all,

Can we establish multiple IKE using one gateway on SRX345? Below is my config. The peer unit is Strongswan. The issue is the user2 cannot establish. Even i disconnect user1 the user2 still cannot establish the IKE.

[edit security ike]
test# show
traceoptions {
    file ike-debug size 10m files 10;
    flag all;
    level 15;
}
proposal ike-proposal {
    authentication-method pre-shared-keys;
    dh-group group14;
    authentication-algorithm sha-256;
    encryption-algorithm aes-128-cbc;
}
policy ike-policy {
    mode aggressive;
    proposals ike-proposal;
    pre-shared-key ascii-text "$9$vA4WNdUDkq.foaz39C0OxN-V24aZU"; ## SECRET-DATA
}
gateway ike-gateway {
    ike-policy ike-policy;
    dynamic user-at-hostname "user1@test.com.us";
    dead-peer-detection optimized;
    external-interface ge-0/0/0.0;
    version v2-only;
}
gateway ike-gateway2 {
    ike-policy ike-policy;
    dynamic user-at-hostname "user2@test.com.us";
    dead-peer-detection optimized;
    external-interface ge-0/0/0.0;
    version v2-only;
}

[May 18 17:11:25]iked_pm_phase1_sa_cfg_lookup_by_addr: Address based phase 1 SA-CFG lookup failed for local:7.7.7.7, remote:42.153.23.34 IKEv2

[May 18 17:11:25]iked_pm_phase1_sa_cfg_lookup: IKEv2, initial negotiation case, skip ID lookup

[May 18 17:11:25]iked_pm_dynamic_gw_local_addr_based_lookup: called with local ip:7.7.7.7

[May 18 17:11:25]iked_pm_dynamic_gw_local_addr_based_lookup: IKEv2, doing local-address based gateway lookup

[May 18 17:11:25]iked_pm_dynamic_gw_local_addr_based_lookup: ktu local ip:7.7.7.7

[May 18 17:11:25]iked_pm_dynamic_gw_local_addr_based_lookup: Found gateway matching local addr ike-gateway for remote dynamic peer, sa_cfg[ipsec-vpn]

[May 18 17:11:25]iked_pm_phase1_sa_cfg_lookup: dynamic gateway match successfula_cfg:ipsec-vpn Gateway:ike-gateway

[May 18 17:11:25]ikev2_fb_idv2_to_idv1: Converting the IKEv2 payload ID IDa(type = email (3), len = 22, value = user2@test.com.us) to IKEv1 ID

[May 18 17:11:25]ikev2_fb_idv2_to_idv1: IKEv2 payload ID converted to IKEv1 payload ID usr@fqdn(any:0,[0..21]=user2@test.com.us)

[May 18 17:11:25]iked_pm_id_validate called with id usr@fqdn(any:0,[0..21]=user2@test.com.us)

[May 18 17:11:25]iked_pm_id_validate id NOT matched.

Thanks and appreciate any feedback