Hi,

I used from the module sms gateway.

I filled out the fields below:

Type , name , username , pass , url , serviceid.

​​When I want to send a message. I get the error below:

The url that this service requested returned an error. 

Please contact the author the app. The url it tried to contact was https://iap-sms.odoo.com/iap/message_send  

What do you think is the problem?