This happened to me a coupe of weeks ago. I had to call member services and they acted as if i had never created an account before even though i had and had even made online reservations before. Somehow when they switched to their new system my account had gotten deleted. They provided me with some sort of one time use code that i needed to make a new account.
Sent from my phone using DISBoards Ap, please excuse any typos and autocorrect mistakes.