Invalid or missing api_id in clickatell

i am trying to integrate clickatell SMS gateway in my web system. i make free test account on clickatell and create SMS REST integrations , from SMS REST integrations i get API key , am use this api key in http://ift.tt/2h3OCTR but i am getting this error "ERR: 108, Invalid or missing api_id".Please help me in getting valid API key , thanks

via Chebli Mohamed