Within your account settings you'll be able to see details of any active subscriptions you may have and be able update your card details for any future payments. You can access your account settings from this link.
If you have an active Pickwatch Pro subscription here you will see the details of when it's due to expire or renew, the option to turn auto-renewal on or off, and the option to switch plan:
Please note, when switching plan you are charged immediately and any existing time you may have had from your original plan will be lost.
Manage Card Details
Clicking the 'Update' button will redirect you to Stripe where you can update your card details for any future payments: