[PagSeguro API v2] Problema Unauthorized

Olá, estou tentando utilizar a nova API do PagSeguro utilizando esse código:

 $cURL = curl_init();

 $dados = array(
 // -> PRODUTO
 "email" => EMAIL,
 "token" => TOKEN,
 "currency" => "BRL",
 "itemId1" => $oferta->PID["id"],
 "itemDescription1" => $oferta->PID["nome"],
 "itemAmount1" => number_format($oferta->PID["preco_coletivo"]/100, 2),
 "itemQuantity1" => $_POST["inputOfertaQntd"],
 "reference" => $oferta->PID["id"],

 // -> USUÁRIO
 "senderEmail" => $uid["nome"],
 "senderName" => $uid["email"],
 "shippingAddressPostalCode" => $uid["cep"],
 "shippingAddressStreet" => $uid["endereco"],
 "shippingAddressNumber" => $uid["numero"],
 "shippingAddressComplement" => $uid["complemento"],
 "shippingAddressDistrict" => $uid["bairro"],
 "shippingAddressCity" => $uid["cidade"],
 "shippingAddressState " => $uid["estado"],
 "senderAreaCode" => $uid["ddd"],
 "senderPhone" => $uid["telefone"],
 "shippingAddressCountry", "BRA",

 "redirectURL", url."/obrigado"
 );

 curl_setopt($cURL, CURLOPT_URL, "https://ws.pagseguro.uol.com.br/v2/checkout");
 curl_setopt($cURL, CURLOPT_FOLLOWLOCATION, false);
 curl_setopt($cURL, CURLOPT_POST, true);
 curl_setopt($cURL, CURLOPT_CONNECTTIMEOUT, 20);
 curl_setopt($cURL, CURLOPT_RETURNTRANSFER, true);
 curl_setopt($cURL, CURLOPT_HEADER, false);
 curl_setopt($cURL, CURLOPT_SSL_VERIFYPEER, false);
 curl_setopt($cURL, CURLOPT_HTTPHEADER, array("Content-Type: application/x-www-form-urlencoded; charset=UTF-8"));
 curl_setopt($cURL, CURLOPT_POSTFIELDS, $dados);
 $resultado = curl_exec($cURL);
 curl_close($cURL);
 echo $resultado;

E só me retorna Unauthorized.

O que faço? Tentei muita coisa, debuguei e nada..

Obrigado.