If you wish to activate Proxy Settings - simply download and run this Proxy reg file or follow the instructions in the image below. Also please make sure your firewall is not blocking any of the applications trying to connect to Konstru. If you are trying to connect from Revit, Revit should have internet access. Same for Rhino, Etabs, etc. Konstru requires Port 443 TCP to connect to the server.
Click Start, and search for regedit and run the regedit program.