As of September 1st, 2016, PayPal will no longer be available as a payment option for new AdWords accounts. Existing AdWords accounts that are currently using PayPal will be able to continue using PayPal until November 1st, 2016. After that date, all payments for AdWords will need to be made through a credit or debit card.
Updating your PayPal account is easy and only takes a few minutes. You can update your account by going to the "Update Account" page and entering your new information. PayPal will then send you an email confirming your changes.
Overall, updating your PayPal account services is a fairly simple and straightforward process. By taking the time to update your account information, you can help ensure that your account remains secure and that your transactions go smoothly.