The issue seem to be that you have not yet validated for the new code, which is why you can't log in to the archives. This is what you need to do:
FIRST: Use this link to help you clear your cache and cookies, You MUST clear the old cookies, or this will not work.
SECOND: If your password is less than 8 characters, you will need to reset it. Use this link to reset your password. You MUST use the email account that you used to create your archive account.
THIRD: Use this link to log in with the new code. Please follow the steps carefully. You will be sent a validation email, and you will need to click on the link in that email as part of this process. If it doesn't appear in your Inbox, check your Junk or Spam folders.