Edit 3: It'll be up in a couple hours today. I hope this is helpful, seeing as most of you don't look at the front page of their website.
I just downloaded WowStuff for my invisibility cloak, and even though all credentials are correctly imputed, it just says "Something went wrong. Try again." So I've been doing this for the past 10 minutes, and on my very first try I only got as far as the product number. I'm not too sure if it's broken or needs fixing, but I really want to use my cloak. I'll try again later, maybe in an hour or so.
Edit: Just looked at the website and the servers were down. Hope you fix it soon, guys.
Edit 2: Okay guys, this is ridiculous. The servers are still in the works of being fixed and it's been HOURS. You guys need to step up your game, and hurry up, or else my cloak is just a little green screen blanket, and I don't want that! So please hurry. And, once you get the servers up it'll just be bombarded with users, so honestly, just make it easy on the servers to process a bajillion people making accounts at a time.