I would guess they weren’t expecting so many people to use it and the system can’t cope. People who transferred when the thread was first posted got there almost immediately. Now there’s a backlog and I guess the system is working its way through it as quickly as it can without breaking altogether.
It did say in the original post:
There’s nothing anyone can do until they work their way through. Trying to speed them up or cancel them will irreversibly break the character.