If you prefer to use your phone number, you can log-in or register a new account here.
If you like the feel of plastic against your fingertips, go ahead and pick up a new card at your nearest location. You will need the sales associate to activate it in a transaction first, so don't just grab one and leave!
If you registered your old card, you can merge this new card with your account in the "manage card" section.
Unfortunately, non-registered cards can not be recovered.
If you would like to deactivate your old card, log into your account and click the "change status" button under manage cards.