SMS gateway test

Hello,

is there a way of testing the API with the sms provider gateway?

I have setup an account with Clickatell and when i click the button to "Show available sms credit" it returns ERR: 001, Authentication failed, is this just it cant get that particular info or is the API not talking?

I have spoken to Clickatell support who say that my details are all fine, username password and API ID all check out and no IP filtering is configured.

Many thanks

Mark