Hi Fireblocks Support,
Our sandbox co-signer (ID: a33622be44) has been offline since March 2nd, 2026. As a result, our API user appears to have been automatically disabled, and all API requests now return 403 with Cloudflare error code 1010 — including basic vault reads. Details: - API Key: 3481688a-efb6-42ef-b6f2-e41d56e9c082 - Co-signer ID: a33622be44 - Vault: Default (ID: 0) - Error: HTTP 403, Cloudflare error 1010 on all /v1/vault/* endpoints - JWT signing is confirmed working (RS256, RSA-4096, correct claims)
Could you please reactivate the co-signer or reset our sandbox environment? Thank you