All disputes or chargebacks from the PayPal Block must be viewed and managed in your PayPal Account dashboard at PayPal.com. 

PayPal is the payment processor for any sales made through the PayPal Block. Work with PayPal directly to resolve any disputes or chargebacks. You can learn more about the process here: PayPal: Disputes, claims, and chargebacks 

Universe does not have access to your PayPal account and unfortunately cannot help you with PayPal account issues.