My company has an Email Plus account on Contact Contact. We need to use Constant Contact API v3. I have followed the steps given in this article (https://v3.developer.constantcontact.com/api_guide/getting_started.html?_ga=2.29322108.1308822313.1604336357-1472774524.1603458905 ) to register my application. Now, inside my PHP project, when I use the API Key and Secret (Generated through the steps given in the above article), I always get the "Unauthenticated error". I have tried to make calls to API with api_key as a query parameter and passing the access token in the header and also making a call to API without api_key as a query parameter. https://api.cc.email/v3/contacts?include_count=false?api_key=$api_key https://api.cc.email/v3/contacts None of the above worked and gave me the same unauthenticated error. I am using the following code : $token = ""; $apiKey = ""; $ch = curl_init(); $headers = array(); $headers[] = "Authorization: Bearer {$token}"; $headers[] = 'Content-Type: application/json'; $headers[] = 'Cache-Control: no-cache'; $headers[] = 'Accept: application/json'; // set URL and other appropriate options //curl_setopt($ch, CURLOPT_URL, "https://api.cc.email/v3/contacts?include_count=false?api_key=$api_key"); curl_setopt($ch, CURLOPT_URL, "https://api.cc.email/v3/contacts"); curl_setopt( $ch, CURLOPT_HTTPHEADER, $headers); curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "GET"); //curl_setopt($ch,CURLOPT_POSTFIELDS, $json_data); $curl_response = curl_exec($ch); curl_close($ch); Am I doing anything wrong? Also, this access token is what I generated after registering the app in the "My Application" section. Secondly, we have an Email Plus account instead of Developer's, is that a problem? 2. Is there any way, where using the template IDs or any other identifier for the templates, can I use the Templates for the emails through API? and can send variables to the template for example the Username or their email address or maybe a customized message?
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