Sandbox

1 - Registered.
2 - Got confirming e-mail.
3 - Confirmation link results in:
     "Invalid Activation Link!
     There is no such account in our database or the account has already been activated."
4 - Login result (6 times from 2 different computers):
     "Incorrect username or password. Please try again."

And yes, I used the full confirmation link which ends in a 32-character hex(?) string

PM sent, there was a space before the username provided.