Sometimes the payment for the subscription might fail due to various reasons like Insufficient funds, online payments being disabled or card expiration.
The best way to learn the exact error that prevents the subscription renewal is to check the Invoices section on the Billing page. You will see the failed payment in red, please hover over the exclamation mark to learn about the error:
Kindly triple check that you’ve typed the correct information into all the fields. If yes, please check whether your credit card has sufficient funds on it.
If that doesn't help we suggest contacting your credit card issuer, it's quite common that the banks block the payments on their end.
For more info you can always hit us up on Intercom or at firstname.lastname@example.org.