Your billing and account information is all stored in the Billing section of your settings. Just click Settings in your sidebar, then click Billing.
Here you will see the details of your current plan, your usage against your account's limits, currently enabled features, and a summary of your payment fees for the current billing period.
link Update card details
Towards the bottom of the page you can update your card details, and set a finance email address for any billing-related correspondence. Make sure to hit the Save button for any changes you make.
If you have any questions about your billing, please get in touch.