Did you not talk to your host about it? A host would have used your primary comps that whole time. A random FD agent is just about the last person I'd trust about anything. In any case, it's not like you lost out permanently because it just means your primary comps weren't drawn from at the time, so no loss in the end.

I'll just add that - in theory - Express Comps was a great idea. Giving table games players easy access to comps and reducing host workload is a win-win at that interaction level. The problem was the implementation; since mLife still wanted hosts to have control over most of the comps, they only allowed a tiny fraction of comps to go into Express Comps - which made it totally useless for the vast majority of players. So it's no surprise they ended the system. Cosmo's Identity has a much better implementation of points for players.