You probably haven't fully understood how the bundle works. From you email, I gather you just bought JFK, and expected to get Zurich for free. It's not like that, as clearly advertized on the home page, on this forum thread here:
http://www.fsdreamteam.com/forum/index.php?topic=953.0And on the Esellerate confirmation screen before processing the order (so, before charging your CC), for the bundle to be working, you need to purchase BOTH JFK and O'Hare in the same order, then you will receive a free serial for Zurich.
It will not work just with JFK, and it will not work if you bought O'Hare already.
Also, as explained in the forum thread above, you don't have to "Reinstall". Reinstall, as clearly explained on all manuals and forum thread, is ONLY used with reinstalling on a new machine or when reformatting your system from scratch.
If the system accepted your bundle (which means you ordered KFJK + KORD at full price, either in the same order or within minutes one from each other), to activate the other 2 airports, you need to use the "Register Serial" option, to insert the other serials you got in your mail receipt.