Vrakthris, a Blizzard blue poster over in the Customer Service forums, posted that any people having issues with their Wrath of the Lich King beta key should send them an email to the address contained in the beta email.
Last night we were pursuing a key issue of our own, and all we got was an automated response from the email address pointed to in the Beta invitation. Tonight however, that no longer happens – so it appears as if this email address is being staffed by a live person.
This is great news for those that have issues, including any that might revolve around a WWI '08 EU key not working with a US account. Hopefully Blizzard will respond promptly to all of us that have been emailing this address. If Blizzard or any of the blues release any more statements you'll see them here at WoW Insider.