To simply answer the question, yes. Every process requiring a login from PayPal must be approved by PayPal itself and only then we are able to collect your email address.
This procedure is safe and secure, we promise you. Linking your PayPal account is solely for the purpose of expediting the processing and receipt of your PayPal redemption. Furthermore, PayPal only shares your user ID with us, allowing us to confirm that the Payout is made to the correct PayPal user ID.
You can also unlink your account and opt-out at any time.