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Before You Contact Us

Most integration issues are one of these:
  1. INVALID_SIGNATURE errors — see common signature mistakes
  2. Missing webhooks — check the webhook requirements: HTTPS, publicly reachable, 2xx within 10 seconds, no redirects
  3. Duplicate rejections — each X-Request-ID is single-use; generate a fresh one per attempt

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What to Include in a Ticket

Every error response contains a requestId — it is the fastest way for us to find your request in our logs.
  • The requestId from the error response (or X-Request-ID header of a webhook delivery)
  • The error code and message you received
  • Your merchant ID and the environment (sandbox or production)
  • For transfer issues: the txn_id and your client_reference
Never share your Ed25519 private key with anyone — including GoPay support. We will never ask for it, and we cannot recover it if lost; rotate the key from the dashboard instead.