Changing payment details is just a few clicks away. You will be able to update your preferred credit card or Pay Pal account.
Click your subscription details link to get to "Edit Subscription" menu (If you can't find the link to click, hover your mouse near to the Edit Subscription words until a hand-click icon is shown):
Select "Update Payment Method" and click "Next".
Update your credit card details accordingly or input details of your PayPal account. Then click "Update Payment Method".
How to change billing address?
You may also change billing address that is linked to your Ahrefs account.