Need Someone Who Can Help Me Setup Firebase Cloud Messaging V1 for an iOS App and Sending Push Notifications from a Website (or Postman) via FCM API

Hi. I used to use the old Google Firebase Cloud Messaging API (Legacy) to setup and send Push Notifications, but it's now deprecated and disabled in Firebase. I don't know how to get pushes working any more or the APN Tokens generating in iOS Apps. 1. I need to know what to do to get this back working with the new Firebase Cloud Messaging V1 - how do I get a Key now? Firebase used to generate the Web API Key instantly. Then I guess once this is done correctly, the Google PList will work when I add it to XCode for an app 2. I need to get my AppDelegate generating APN/Firebase Tokens again. I used to get one for every user/device. Then I would store those via API in my database. 3. I used to use an FCM CURL function to send Push Notifications from a php file (see below), but I think the Authorization key part changed - and I need. to know how to do this now and what to use for the key and where to get that key (specifically) - as they don't auto generate the key in the same spot any more (see screenshot - the part I used to use is now Disabled). function notify($token,$title,$message,$type,$extra=[], $app_id = 1, $silent = false){ $key="AAAA##########################################"; $notification=array( 'body' => $message, 'eventType'=>$type, 'title' => $title, 'icon' => 'myicon', 'badge' => 1 ); if (!$silent) { $notification['sound'] = 'mySound'; } $fields = array ( 'to' => $token, 'notification' => array_merge($notification,$extra), // 'data'=>array('eventType'=>$type) 'data'=> array_merge($extra, array('eventType'=>$type)) ); if ($silent) { $fields['content_available'] = true; } $headers = array ( 'Authorization: key=' . $key, 'Content-Type: application/json' ); $ch = curl_init(); curl_setopt( $ch,CURLOPT_URL, '[login to view URL]' ); curl_setopt( $ch,CURLOPT_POST, true ); curl_setopt( $ch,CURLOPT_HTTPHEADER, $headers ); curl_setopt( $ch,CURLOPT_RETURNTRANSFER, true ); curl_setopt( $ch,CURLOPT_SSL_VERIFYPEER, false ); curl_setopt( $ch,CURLOPT_POSTFIELDS, json_encode( $fields ) ); $result = curl_exec($ch ); curl_close( $ch ); return $result; }