Update your credit card info
Around 7 days before your subscription renewal you will get an email notification (example pic below). This is a good time to check if the credit card you used when you created the subscription, or during your last renewal, is still valid. You can look for emails with the subject "Your receipt from PhoneLeash" to see the last 4 digits of the payment method you used previously.
If you want to update your card information, just email support@phone-leash.com from the email account that you used to create the subscription, and you'll get help!