如何在bluesnap中发送网址以删除订阅？

I am php developer, I integrate my site with bluesnap. I want to allow user to remove their subscription. Bt I cannot pass url from curl, bt "HTTP/1.1 403 Forbidden....." arrise ?

Here is the code

$xmlToSend = ' < subscription xmlns="http://ws.plimus.com" >< /subscription ' > ';               
$url = 'https://ws.bluesnap.com/services/2/subscriptions/'.$subs_id;

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-type: application/xml')); 
curl_setopt($ch, CURLOPT_USERPWD, $credentials);   
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PUT');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $xmlToSend);
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_VERBOSE, 1);

$result = curl_exec($ch);
$info = curl_getinfo($ch, CURLINFO_HEADER_SIZE);

curl_close($ch);

how to solve this? Can I did this from another way or how to get another solution with out curl lib?

Thanks

$xmlToSend =
<subscription xmlns="http://ws.plimus.com"> <subscription-id>' . $subscription_id . '</subscription-id> <status>C</status> <underlying-sku-id>' . $skuId . '</underlying-sku-id> <shopper-id>' . $shopper_id . '</shopper-id> </subscription>;

This xml format i am using for cancelling the subscription $url = 'https://ws.bluesnap.com/services/2/subscriptions/'.$subs_id; you need to to modify the xml not the link, link is correct. please check the link here

Http error 403 error typically means - you do not have the Access roles or IP address enabled/needed to access the service - you need to reach out to support to grant relevant roles for the subscriptions you are coding for. i see that you are calling subscriptions - you need appropriate roles enabled for that call; also you may want to look into calling the cancel subscription API if you wish to cancel the subscription