The Billing and Teams dashboard displays the current card and allows you to enter and save new card information.
The user responsible for billing on your Streak account can update the credit card info by following these steps:
Click the Streak icon in Gmail's top bar
Select the Manage Billing and Teams option
Scroll to the Payment Method section and select Change
Enter your new credit card information and confirm with Update Card
After updating, our payment processor will try your new card on its next cycle (typically 24-48 hours). If you'd like us to try the card sooner, just let us know and we'll be happy to process it for you.