Looks like that was only part of it. Does anyone know where I can find the table related to the Date Registered found in the Customers page? I updated wp_users table user_registered field but the registration date is still blank. I do not even understand why some are blank and some are not.
I managed to fix my issue. I do not know why this happened but I updated woocommerce, wordpress and some plugins and this started happening. What made it difficult is some customers could still place an order.
Under Woocommerce -> Customers I noticed the customers who could not submit an order had a null user registration date while the ones who could place an order did not. So I went in database and updated all the customers with a user registration of 0000-00-00 to a valid date and that fixed the problem.
