When i open FSX i am getting a message saying this program requires a security key.
Which program ? FSX itself ?
In any case, it's nothing related to anything of our products because, if it was (for example, if you lost the registration for a scenery) it would clearly said which scenery needed a reactivation, and it wouldn't ask for name/password, since our registration doesn't use that info at all.
Be careful, because something that asks for name/password, could be something dangerous, like a trojan virus.