I imagine something got lost in the shuffle given how long it has been. These things happen with the sheer volume of email administrators receive.
It is not rude to re-email I do not think; I would just include another scan of your card with the email.
"The devil I'll bring you," answered Hagen. "I have enough to carry with my shield and breastplate; my helm is bright, the sword is in my hand, therefore I bring you naught."