Support
Amazon, n11 or Hepsiburada auth errors
Knowledgebase
401: wrong or revoked key. 403: scope or marketplace id mismatch (Amazon TR vs EU). n11 may still be pending integration approval. HB sandbox keys may have been pasted into live. Fix: issue a new key in the seller panel, pick the correct market, retest. Remember to refresh tokens. If the package cap is 0 it is a limit, not auth—check billing. Tell support the channel and a masked seller id; never paste the raw secret.