I have downloaded the latest FMS Admin API 17 Collection for Postman (for Windows, up to date) and I cannot get the "Log In" Post to work. I consistently get "503 Service Unavailable" when trying to connect to my FileMaker Server Cloud instance.
I have used exactly the same settings with the excellent FMSAdmin.fmp12 (https://community.filemaker.com/docs/DOC-9074) and another method and both work flawlessly and I can connect, see databases, close databases etc.
Anyone have any ideas why Postman might not be working? All settings in Postman are default.