I am using docusign soap api using php. when I am using url https://demo.docusign.net/api/3.0/api.asmx it is working fine, Now I live API key and using https://docusign.net/api/3.0/api.asmx, it is not working, got error - could not connect to host in APIService.php. but if i use http://docusign.net/api/3.0/api.asmx (not https) then it is working fine. Can you please tell me why we getting error when using https?