Why do I get Missing authentication token from Node API

I am trying to interface Reality Capture 1.5 via the Node interface. I am running the RCNode with options .\RCNode.exe -hostAddress 127.0.0.1 -port 8080 -landingPage “/static/MyApp.html” and it seems to be running OK and not getting blocked by the firewall locally.

When I use the endpoint /node/connection it returns the authToken and other params as expected but when I make a request to any other endpoint such as ‘/node/status’ I always get a 401 response with message {“code”:-2113863678,“message”:“Missing authentication token.”}. I assume the appToken is the authToken I received in the connection response but I have tried lots of combinations and always get the same thing. I have also tried adding an appToken param. Any pointers would be very much appreciated.