The PayPal Billing Agreement allows you to make purchases through the client without logging into PayPal. You can delete the billing agreement after it's already been made by following these steps:
- Open the League of Legends store
- Click on the "Purchase RP" button
- Select PayPal and click on any bundle. You won't have to complete the purchase
- Click on the "Cancel Billing Agreement" button when it appears
If you've lost access to your account and would like to make sure your payment information is gone, send us a ticket and we'll take care of it!