API Missing Error Clickatell

Hii,

I have entered all the details of clickatell account into the plugin dashboard but no message is received.

Here is the log:

Mobile number:
917333333333

Message:
Order No. 27041 received on Tailor Trust.

Gateway answer:
Array
(
[headers] => Requests_Utility_CaseInsensitiveDictionary Object
(
[data:protected] => Array
(
[date] => Fri, 16 Mar 2018 05:01:19 GMT
[server] => Apache
[vary] => Accept-Encoding
[content-encoding] => gzip
[content-type] => text/html
)

)

[body] => ERR: 108, Invalid or missing api_id
[response] => Array
(
[code] => 200
[message] => OK
)

[cookies] => Array
(
)

[filename] =>
[http_response] => WP_HTTP_Requests_Response Object
(
[response:protected] => Requests_Response Object
(
[body] => ERR: 108, Invalid or missing api_id
[raw] => HTTP/1.1 200 OK
Date: Fri, 16 Mar 2018 05:01:19 GMT
Server: Apache
Vary: Accept-Encoding
Content-Encoding: gzip
Connection: close
Transfer-Encoding: chunked
Content-Type: text/html

ERR: 108, Invalid or missing api_id
[headers] => Requests_Response_Headers Object
(
[data:protected] => Array
(
[date] => Array
(
[0] => Fri, 16 Mar 2018 05:01:19 GMT
)

[server] => Array
(
[0] => Apache
)

[vary] => Array
(
[0] => Accept-Encoding
)

[content-encoding] => Array
(
[0] => gzip
)

[content-type] => Array
(
[0] => text/html
)

)

)

[status_code] => 200
[protocol_version] => 1.1
[success] => 1
[redirects] => 0
[url] => https://api.clickatell.com/http/sendmsg?api_id=Tailor%20Trust&user=info@tailortrust.com&password=Custom123&to=917339991122&text=Order+No.+27041+received+on+Tailor+Trust.
[history] => Array
(
)

[cookies] => Requests_Cookie_Jar Object
(
[cookies:protected] => Array
(
)

)

)

[filename:protected] =>
[data] =>
[headers] =>
[status] =>
)

)

I think i am missing to enter api somewhere. Please Help!!