There is a message on the Funcom forums saying that Early Access keys to the Age of Conan beta are now sold out and that access is closed...
However, it appears that people who actually have Early Access keys are also being locked out. It seems that Funcom's frustrated at people acquiring keys by pre-ordering the game before cancelling their orders.
"Pre-orders on accounts that was later cancelled will have their keys/account disabled," the site informs.
Full story though the link.