Paypal is not a payment option that is available for the mobile donation form. We recommend suggesting this option for future releases of Sphere through our Idea Bank which can be accessed through the following link: https://www.blackbaud.com/nonprofit-resources/idea-banks.aspx This is where customers can go to suggest and vote on future functionality. Our products team looks at the Idea Bank to see which requests are most popular to see what will be developed for future releases of Sphere.