How to correctly setup AppStudio "Project with a Web Server"?

KenM

I am trying to work out how to properly configure my controller so it can communicate with a local network web server. I have setup and configured my IP for the robot in RS which is on the same local network as my web server app but it says "Request Page Cannot Be Found - The URL may be misspelled or the page you are looking for is no longer available."

Is there a limitation on the port the webserver can be on? Does it need to be http and not https?
Any help or a guide/example would be beneficial.
Ken