From time to time a customer's payment card may fail. Usually this is related to insufficient funds or the card needing updated. Stripe will automatically retry the payment for usually about a week. The steps below will help you determine why the card is failing.

In the customer's subscription hit "View on Stripe"

In Stripe, scroll down to the "Payments" section and click into the failed payment. This shows the payment related to this specific invoice. When you click into this payment you will see the payment attempts and the decline code which will give you the reason for the failed payment:

On the invoice screen in Stripe it will show you how many times the payment has been tried, when it is next due to try. It will also give you the option to "Retry Change". This will let you try the payment again yourself. This can be useful is the customer has indicated they now have sufficient funds on the card to make payment, you can just "retry charge" to push the payment through.

This article details how to change a customers card details

This article shows how customers can change their own card details