Hi. I got the key from a LootBoy pack and it said it was ARMA: Gold Edition. Had I actually known it was Arma Tactics, would have used it myself, to be honest. While I'm really sorry to hear about the mix up, and you have my apologies, I don't have any other keys for ARMA Gold, and I'm seeing you've already activated, there's nothing else for me to do, beside hope you'll have fun with Arma Tactics and wish you a wondeful holiday season.