Convertapi Failed SSL Handshake in iOS 9

Question

I am trying to get an image using ConvertApi to get an image from a webpage URL. My problem is that iOS >9 requires SSL for connections, and even ConvertAPI gives us https URLs, the SSL Handshake keeps failing. Here's my code to get the image:

let stringData = "ApiKey=\(ConvertAPI.Key)&CUrl=\(anURL.absoluteString)";

let request = NSMutableURLRequest(URL: NSURL(string: ConvertAPI.URL)!)
request.HTTPMethod = "POST" 
request.HTTPBody = stringData.dataUsingEncoding(NSUTF8StringEncoding)

let session = NSURLSession.sharedSession()

let task = session.dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in   
   let returnImage = UIImage(data: data!)
})

Please note that:

• If I do accept http (using info.plist method) and change the ConvertAPI URL to http:// it works.
• If I do not accept http and set the https:// in ConvertAPI URL it fails 3 times (3 logs about failed ssl handshake and then returns an error.
• Swift 2, Xcode 7.1

Is this a ConvertAPI SSL problem? Is this my code problem? or is this a Swift bug?

EDIT This is the console log for error and object taken with a breakpoint:

2015-09-21 19:02:12.386 appname[14528:606252] CFNetwork SSLHandshake failed (-9801)
2015-09-21 19:02:12.387 appname[14528:606252] NSURLSession/NSURLConnection HTTP load failed (kCFStreamErrorDomainSSL, -9801)