We answer within two working days. For billing, refunds and card data, Paddle is the Merchant of Record and handles the request directly.
Support: hyman.liz@foxmail.com
Billing & refunds: the link in your Paddle receipt, or Paddle support — Paddle is the Merchant of Record and handles card data and refunds.
Postal address: available on request for regulatory correspondence.
If this site itself creates a barrier for you, tell us and we will fix it — that is the whole point of the product.