It is not mandatory to add authentication to the Web API, but definitely from security perspective it is good idea to do if your app is accessible over the Internet.

Hi Sim;

  These are just warnings (basically just FYI's) that not all configurations have yet been completed. Some of which, you might not need.

All of these options though are well documented in the PS Help available from the PS Project toolbar help or on-line at:  https://docs.appeon.com

HTH

Regards .. Chris