Although I am not discounting that this could be a problem with transfers, I want to be sure of that before I forward it on. First, remember that transfers can take up to one hour to complete and I would imagine there is quite a volume of transfers happening right now. During the transfer process you will be unable to access your characters, and they will not show up on the destination server, both are as you described. I would give it up to its hour for the transfer to go through and if you are still having this issue, please let us know.
My transfer /failed/ and I have the error too. Now what?
Edit: As in, I was able to log in normally to the game, check out my 55 that I wanted to xfer and empty mailbox. Logged all the way out of the game. Put her in for transfer. Refreshed page after a bit. Saw the xfer failed failed. Went to log in. Can't.
P.S. And now she's locked and can't be xfered.