I was able to activate, but not sign in or create an account. When I get the screen with 3 icons (Facebook, Google+ and PBS), nothing happens when I click them. I don't know if it's a settings thing or what.
Did anyone else have problems completing the activation using Safari? I was able to type in the activation code, but then had to register an account by clicking either the Facebook icon, Google+ icon or the PBS icon. Clicking on any icon did nothing. I had to do it on Firefox.