Problems connecting to server.

I have inherited a piece of software that accesses flightaware using SOAP queries via this address flightxml.flightaware.com/soap/FlightXML2

However, I can not seem to access them, and am getting authentication errors at my side (I have a key and a login) when I follow the link I am greeted by a page
"Gone

The requested resource
/soap/FlightXML2
is no longer available on this server and there is no forwarding address. Please remove all references to this resource."

Is there a new way of getting this information or is it a problem at my side?

Many thanks

Craig Martin

That specific URL was never valid, since that is just a fragment of the full URL.

flightxml.flightaware.com/soap/FlightXML2/doc is the documentation.
flightxml.flightaware.com/soap/FlightXML2/wsdl is the WSDL.
flightxml.flightaware.com/soap/FlightXML2/op is the SOAP endpoint.