All Jetty plans have the option of either recurring monthly payments or one upfront annual payment.
In the event that you choose monthly payments, your payment date will be the day after your start date. So if your plan started on the 1st, your payment date will be the 2nd of each month. You can find your start date on page 3 of your plan summary.
If you need to update your payment method, you can do so by logging in to your account page and heading to "Settings". Once you've added the new card, the system will know to charge that card going forward.
Feel free to contact us at firstname.lastname@example.org should you need to coordinate an alternative form of supported payment (cash or check) or if you have any questions!