The double emails are due to the program erroring when I enter my email, so I also go online and do it, but apparently it does actually send the original email from the design palette.
Still getting the same issue. The email also sends twice with the activation code, but has the same code in both. I double checked the code and email against what was entered into the form and they matched.
I'm getting a very similar issue, where when I get my activation code and put it in, I just get a dialog saying "A problem occurred. Please try again." This happens no matter how many times I try it.