Hi, Stephanie-

You can find information about donations in this article and at https://www.khanacademy.org/donate

If your recurring donation is set up through PayPal, you can make changes directly from your PayPal account. As donations are initiated from your PayPal account, Khan Academy is unable to change or edit settings on your behalf.

All other recurring donations can be changed by contacting us at donate@khanacademy.org. You can also cancel your gift and/or start a new one by following the link at the bottom of one of your monthly receipts.

I hope this helps! Thank you for your continued support!