I am getting error while using login API https://api.cloud.appcelerator.com/v1/users/login.json?key=<YOUR APP APP KEY>&pretty_json=true -

while doing login using https://api.cloud.appcelerator.com/v1/users/login.json?key=<your app app key>&pretty_json=true rest endpoint getting error:

error : no connection made because target machine actively refused it

we doing call using c# remote server.