Applies to: Photo Ephemeris Web Pro (aka TPE Web App v2)

To manage your subscription, click the PRO badge at the top right of the screen:

Your current and any past subscriptions will be shown on the next page:

Available options are displayed after clicking 'Manage Subscription':

Click to update or cancel. You will be shown a popup window where you can confirm the changes.

To update your Payment Method, click Update: