August 01, 2026 at 1:20 AMUTCSecond of two sandbox migration windows.
During this window **api.sandbox.zennopay.in** will be briefly unreachable while its TLS certificate is reissued. Expected impact is 15-60 minutes within the window.
This is the hostname used by published SDKs (v0.7.0 and earlier). It remains supported permanently - only the infrastructure behind it changes. Credentials, session tokens and the 9pay sandbox integration are unchanged.
**Production (api.zennopay.in) is not affected.**