Router cannot route correctly

Questions
1

Hello,
I have a router like “/admin/user/list”. When I try to enter " /admin/user/list?start=0&length=100&order[0][column]=0" url Kong cannot route correctly to upstream url but still response 200.
This is service:

{
    "host": "10.20.30.15",
    "created_at": 1535702388,
    "connect_timeout": 60000,
    "id": "ece2021d-50e4-49b0-a8ed-3ac0afcc6e5d",
    "protocol": "http",
    "name": "admin-api-list",
    "read_timeout": 60000,
    "port": 8080,
    "path": "/admin/user/list",
    "updated_at": 1535702388,
    "retries": 5,
    "write_timeout": 60000
}

This is router:

    {
        "created_at": 1535702488,
        "strip_path": true,
        "hosts": null,
        "preserve_host": false,
        "regex_priority": 0,
        "updated_at": 1535702488,
        "paths": [
            "/admin/user/list"
        ],
        "service": {
            "id": "ece2021d-50e4-49b0-a8ed-3ac0afcc6e5d"
        },
        "methods": [
            "GET",
            "POST"
        ],
        "protocols": [
            "http",
            "https"
        ],
        "id": "9400807d-c88c-4ba5-ae3e-1209745e00f7"
    }

What i am missing?