So I just looked into it. It appears he was warned on this post https://forums.racingrivals.com/rivals/discussion/5320380/eddieward-3-0/p6 that's why it's says scammerscammerscammer . I did ban him after at his will though.
They are codes that reward various things. I've only seen them given out a few times since the game was launched... They are very rare. They gave a bunch a way on Twitter a while back. There has also been codes coming from other "cie" games.