When sending a test to myself I received this error
Sending to 52661-114-6944
Error sending: HTTP status 400; Response was {
This is my configuration.
Bulksms EAPI url http://usa.bulksms.com/eapi
SMS username afruin
SMS password ##########
SMS reply eg:447777123456 526611146944
Country code eg 44 52
I know this is not much to go on but I am hoping that you have some experience that will point the way.