Get into the Client Area.

Go to Billing > My Invoices
​
​

​

Find the unpaid invoice that you want to pay and click on it:
​

​

You will be redirected to your Invoice. Change the Payment Method to Stripe and then click on Pay Now:
​

​

Make sure you (re)enter the correct Credit Card details on the next screen: Card Number, Expiration Date and the 3-digit CVV/CVC code.
You will also need to make sure the Billing Address tied to that Card is correct otherwise you can add a new Billing address.
Lastly, set a name for the Card so you can identify it later:
​
​

​

Once you've entered all the necessary details, click Submit Payment and wait until the successful message come in:
​
​
​

​

Once you pay, there is a last step to make sure you will use the same card in future payments. First, go back to the client area:
​
​

​

Go to Billing -> Payment Methods (or follow this link here):
​

​

Make sure the default card is the one you just added, otherwise if you have multiple cards, make sure to click on "Set as Default" to the same card you just added:
​
​

​

The very last step is to make sure that your Payment method is set to Stripe at your account details. If this is not set, your automatic payments may not work in the future so this is important to make sure it will work on future charges.
Go to Edit Account Details by going to "Hello <YOUR NAME>!" at the top right corner of the page:
​
​

​

Fin Payment Method, select Stripe and Save changes:
​

Now you are all set to making automatic payments with Stripe.