Hi there Aroukati, the reason is because character creation has been restricted for people with no characters on the realm, which the undeletion behaves as in this case.
You would need to contact Customer Support ingame about restoring your Hunter, we wouldn’t look to bypass the ticket queue for people on these issues from forums posts. However, it should be stressed that an exception may not be made for the restoration as Customer Support does not normally restore characters for players any more.
Remember character deletion is intended as a permanent solution, so in the future you should consider deletion more carefully on characters you may want to use in the future.