Ian... that won't work, just delete that url...
You need to order the key through the dealer. After that it needs to be paired to the vehicle. All keys need to be present at that point. Then some IID tools can pair it to the vehicle. I tried the key with electronics from some crook in California and it didn't work, shipped back and they claimed they didn't get it back, after I provided proof of delivery, I never heard from them again.... I email them every year. Once it's been factory setup for a vehicle, it can't be installed on a different vehicle (that would kind of defeat the point).
Save yourself a bit of hassle...
1. Order key from a dealer
2. Let them pair it to your vehicle, maybe the gap tool will do the pairing if you have one.
I don't see it specifically mentioned on the GAP site... so you'll need to inquire if you have one.