Same problem. Got Tales of Monkey Island on Friday and I couldn't unlock it, so I e-mailed them. I got the automated e-mail but since then I've been waiting.
So unless someone here can help me out now (which would be amazing), how much longer should I be waiting?
I don't care, I said 40 hours. It's gonna be 40 hours. Player Be Damned!
-Ron Gilbert, MI2:SE Commentary