Hello! I see you want to update your credit card information on the Pocket FM app while using your Macintosh with OS X 10.15.7. Let me clarify a bit so I can help you best: Are you currently subscribed to a Pocket FM subscription plan, or are you trying to update your card details for a one-time purchase?

Generally, according to Pocket FM's terms, you cannot change your payment method during an active subscription plan. This means if you want to update your credit card, you might need to cancel your current subscription first and then subscribe again with the new card details.

Here's a step-by-step approach to what you can do:

1. If you have an active subscription:
- Open the Pocket FM app on your Mac or through a web browser.
- Navigate to your subscription management area or your account settings.
- Cancel your current subscription to stop auto-renewal.

2. Once canceled, wait for your current subscription period to end.

3. After the subscription period lapses, re-subscribe using the new credit card info.

Alternatively, if your subscription is through Apple (via your Mac's App Store), you would manage your subscription and payment method in your Apple ID settings:
- Open System Preferences on your Mac.
- Click on your Apple ID, then "Payment & Shipping."
- Update your credit card info there to affect Apple subscriptions.

If you only need to update the payment info without canceling, unfortunately, Pocket FM's policy doesn't allow changing payment methods mid-subscription. You also might want to consider contacting Pocket FM support at [email protected] to check if there is any exception or alternative procedure.

Let me know if you were trying to update card info for a specific payment method, or if you subscribed via Apple or directly through Pocket FM. That way, I can guide you more precisely! Are you satisfied with this information, or do you want me to walk you through a specific step?