"No more POAP available" error

[PacificUnific]

Hello!
I believe you help me with Decentraland POAP server error.

1. I set up these on my scene
2. Created a drop on https://app.poap.xyz/admin/events/new (private with 10 mint links)
3. Then I recieved a mail with edit code and event code
4. Sent POST request https://poap-api.decentraland.org/event/{event_id} and pointed edit code and parcel in request body. I got a response with uuid
5. I entered this uuid to the scene, to the dispenser.
6. Deployed a scene and tested.

I click on a button on the dispenset, solve captcha and recieve an error "No more POAP available" with 400 HTTP-status code.

Also I sent a request to https://poap-api.decentraland.org/addcodes/{event_id} and got the next answer:

{
    "ok": true,
    "data": {
        "url": "/addcodes/{event_id}",
        "body": {
            "num": 0
        }
    }
}

I don't know what is the reason of this error, I really believe you help me solve that. Thank you!