SSTP guide to route traffic via the tunnel?

I have just about followed every guide available. Either the router crashes and needs a total reset or the traffic just doesnt go out of the tunnel in the other end.

The router/sstp client connects fine to the windows server and gets an IP. It shows up in the server remote access management and everything seems fine except the traffic doesnt route via the tunnel.

Is someone sharp enough to point out the obvious here LOL