Change Credit Card Details
You can manage your credit card payment information from your WordPress.com dashboard. This is useful if you need to check which credit card will be billed or update it with a different card. After logging in there are two locations to check.
Update Credit Card for Auto-Renew: My Upgrades
If you have auto-renew set for at least one of your upgrades, in Store → My Upgrades, there will be a “Update Credit Card” link to update credit card details next to each upgrade.
Check Payment Method: User Settings
If you have a credit card saved, open WordPress.com and from the top-right corner under your user avatar → Settings you’ll find the Account details page (see the image above). If a payment method is stored you will be able to see the “Payment Method” entry. There you’ll see the last four digits of your credit card we have on file for you. You will also able to delete them by clicking the “Delete Payment Data” link.
Alternatively, you can find the same information by accessing your blog dashboard and opening Users → Personal Settings. On that page then scroll down to find “Stored Credit Card Details“.
If you don’t remember the password and need to recover your login details to access the dashboard, please read the Account Recovery page.