Update Billing Information

Update Credit Card Info (Credit Card Payments/Stripe)

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Update your billing information.
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Update Billing Information

Update Paypal Info (Paypal Payments)

Here is how you get to your subscription info in Paypal to update billing information.

Or, log in to Paypal and use this link to jump right to your Pre-Approved Payments section. Look for Douglas Jacoby and click the "update" button, and look for Funding Source.

Update Your Subscription Info at Paypal.com