FA credit goes like this.
If you climbed the route, on it's first ascent, you are included on the FA and should have your name listed.
If you lead the CRUX pitch your name comes first, then the belayer, then the 3rd, 4th etc....
Pretty standard.
Now, if you belay from the deck, and don't climb the route during it's FA, you are not included on the FA.
Same with big climbs, many help out, but you have to be present on the send.