Why fastdl-host incorrect redirect?

[4do4]

I have a domain: rpkoma.com

and 2 subdomain: 

- server1 (there is just rage mp server)

- fqdn (there is nginx with fastdl snapshot for rage mp)

I have fastdl, and it is worked. But when I want to download file from the browser:

From this link "http://server1.rpkoma.com:22006/file/1"

I received this: 

 

Why are files name different? I want to download 1th file but the server redirects me to the 2057th file...

 

And, I think, because of this rage mp don't download DLC files, the rage mp launcher looks like this:

 

Client files just don't download.

 

But I can download files from the browser. But redirects is working not correct. And I think it is because of not correct redirects, because, the launcher needs to download files in order (1, 2, 3...)

but redirects says "NO! DO YOU WANT 1th file? GET 2057th file!"

Help me, please!

 

Thank you, everybody!

And I have this configs the rage mp server:

{
  "gamemode": "roleplay",
  "name": "RP KOMA [OBT]",
  "maxplayers": 1000,
  "port": 22005,
  "language": "ru",
  "stream-distance": 500.0,
  "announce": true,
  "voice-chat": true,
  "fastdl-host": "http://fqdn.rpkoma.com",
  "fqdn": "server1.rpkoma.com",
  "voice-chat-sample-rate": 48000,
  "api-threading-debugging": false,
  "csharp" : "enabled",
  "client-packages-shared-folder": "rpkoma.com"
}