The only way to change the card you use to pay for your subscription is by following the steps outlined below:
Step 1. Click 'account' in the top righthand corner menu.
Step 2. Switch to the 'credit cards' tab.
Step 3. Click 'update card' on the currently listed card tied to the subscription.
Step 4. Fill out the blank fields and hit 'Update.'
You do not need to delete the card, filling out these fields with your new card will replace the one on file and continue with the renewal from there.
As always, if you run into any issues, don't hesitate to chat with our support team or shoot us an e-mail at firstname.lastname@example.org