AlliedModders - Callbacks not executed

Hi Guys
I am writing plugin which requires access to external resources, i chose REST requests and ripextextension this is part of my plugin with debug inserts

Code:

public void OnPluginStart()

{

    PrintToServer("Started");



    PrintToServer("1");

    HTTPClient hHTTPClient = new HTTPClient("https://httpbin.org");

    JSONObject hJSONObject = CreateJSONObject();

    PrintToServer("2");



    hHTTPClient.Get("get", OnHTTPResponse, 0);

    PrintToServer("3");



    hHTTPClient.Post("post", hJSONObject, OnHTTPResponse, 1);

    PrintToServer("4");



    hHTTPClient.Put("put", hJSONObject, OnHTTPResponse, 2);

    hHTTPClient.Patch("patch", hJSONObject, OnHTTPResponse, 3);

    hHTTPClient.Delete("delete", OnHTTPResponse, 4);

    hHTTPClient.Get("gzip", OnHTTPResponse, 5);



    delete hJSONObject;

    PrintToServer("Finished");



}



public void OnHTTPResponse(HTTPResponse response, any value)

{

    if (response.Status != HTTPStatus_OK) {

        PrintToServer("[ERR] %s Status: %d", sHTTPTags[value], response.Status);

        return;

    }

    if (response.Data == null) {

        PrintToServer("[OK] %s No response", sHTTPTags[value]);

        return;

    }



    char sData[1024];

    response.Data.ToString(sData, sizeof(sData), JSON_INDENT(4));



    PrintToServer("[OK] %s Response:\n%s", sHTTPTags[value], sData);

}



JSONObject CreateJSONObject()

{

    JSONObject hJSONObject = new JSONObject();

    hJSONObject.SetInt("id", 1);

    hJSONObject.SetFloat("jsonrpc", 2.0);

    hJSONObject.SetString("method", "subtract");



    JSONArray hJSONArray = new JSONArray();

    hJSONArray.PushInt(42);

    hJSONArray.PushInt(23);

    hJSONObject.Set("params", hJSONArray);



    delete hJSONArray;

    return hJSONObject;

}

And it's console output:

Code:

NET_CloseAllSockets

---- Host_NewGame ----

Host_NewGame on map zm_toxic_house3_hdr

CGameEventManager::AddListener: event 'teamplay_win_panel' unknown.

CGameEventManager::AddListener: event 'teamplay_restart_round' unknown.

CGameEventManager::AddListener: event 'arena_win_panel' unknown.

Started

1

2

3

4

Finished

GameTypes: missing mapgroupsSP entry for game type/mode (custom/custom).

I don't get responses from callbacks - like they were never called and no error messages - basically like these callbacks were empty functions. Initially i thought it's fault of extension so i tested curl, socket based, etc.
So now is my question, what are possible known root causes of such behaviour?
EDIT:
I am using sourcemod 1.10 (required for zombie plague by Qubka) - but this type of behaviours occurs also on 1.9
And it's also development server with no steam account token, but with gslt token sitation looks exactly the same
I also repeated everything on clear server that means only ripext + my plugin - which is basically modified ripext test ( only with PrintToServer added)