Here you can edit/save your billing information along with seeing information regarding your subscription.
After entering in your billing information, scroll down to subscription details and select from the dropdown, which subscription you would like to start. Monthly or Yearly.
Select: choose a way to pay and enter in the info to make payment and start paid subscription service.
*Please note: when you are updating your payment information for an existing paid subscription, please enter in your new payment method first before deleting the old one.