PayPal may ask you to change your password under certain circumstances. For instance, if there is a suspected unauthorized login attempt or if they detect any suspicious activity on your account, they may send you a notification to change your password as a security measure. It's important to keep your account details secure to prevent any unauthorized access or fraud, so it's recommended to follow any safety instructions provided by PayPal or any other service provider. In general, it's also a good practice to change passwords regularly and to create strong, unique passwords for each account.