Hi Freddie,

Please try the following :

System >> Access Groups >> Action >> Rest API >> Full

Also select HTTP Authentication in Optional features


Try in terminal, for example
curl http://UserNameHere@ServerIpHere:WebPortHere/api/1/ICSVc

And see if it works, if not please let me know and we can try something else. Please also provide me with the exact version number you are using.

Kind Regards,
Richard Saunders