[Resolved] Webhook sub accepted but not receiving events

<?php
require "site.class.php"

header("Access-Control-Allow-Origin: *");
header("Access-Control-Allow-Headers:*");

$app = new site('');

$mode = $_POST['submode'];
$client_id = <client id>;
$lease_seconds = 24*60*60;

$postData = array(
    'hub.mode' => $mode,
    'hub.topic' => "https://api.twitch.tv/helix/users/follows?first=1&to_id=23161357",
    'hub.callback' => '<website>/PHP/webHookHandle.php',
    'hub.lease_seconds' => $lease_seconds,
);

$dataEncode = json_encode($postData);

$httpHeader = array(
    'Content-Type: application/json',
    'Content-Length: ' . strlen($dataEncode),
    'Client-ID: ' . $client_id
);

$app->bufferPost("https://api.twitch.tv/helix/webhooks/hub", $dataEncode, $httpHeader);


?>


public function bufferPost($link, $postField, $httpHeader) {
        curl_setopt($this->curl, CURLOPT_VERBOSE,true);
        curl_setopt($this->curl, CURLOPT_URL, $link);
        curl_setopt($this->curl, CURLOPT_CUSTOMREQUEST, "POST");
        curl_setopt($this->curl, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($this->curl, CURLOPT_USERAGENT, $this->userAgent);
        
        curl_setopt($this->curl, CURLOPT_POST, true);
        curl_setopt($this->curl, CURLOPT_POSTFIELDS, $postField);
        curl_setopt($this->curl, CURLOPT_HTTPHEADER, $httpHeader);
        
        //turn off HTTPs errors
        curl_setopt($this->curl, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($this->curl, CURLOPT_SSL_VERIFYPEER, false);
        
        //where cookies are saved if cookie exists
        if ($this->cookieFile) {
            curl_setopt($this->curl, CURLOPT_COOKIESESSION, TRUE);
            curl_setopt($this->curl, CURLOPT_COOKIEJAR, $this->cookieFile);  
        }
        
        curl_setopt($this->curl, CURLOPT_COOKIE, $this->cookie);
        curl_setopt($this->curl, CURLOPT_REFERER, $this->referer);
        
        $this->bufferPage = curl_exec($this->curl);
        $httpCode = curl_getinfo($this->curl , CURLINFO_HTTP_CODE);
    }

That should cover everything for the subscription part.