you have to create a server account that you then enter as your EA account.
You already have a revora account, you can use that to login to the cnc online website.
So... I went to the CNC online website, I was already logged in via revora account, and I've created a new profile with its own ID etc. Should I use this profile's data to log in to multiplayer in-game?
Or you were talking about my CNC online profile here https://cnc-online.net/users/247737/ ? Which profile should I use?