Apple Pay is not available — complete Apple Pay setup
Digital wallet checkout shows Apple Pay is not available. Complete Apple Pay setup in Authorize.net and verify your domain with Apple. (premium.applePayUnavailable).
Why this happens
Merchant certs/domain not finished, session validation failed, or browser/device cannot run Apple Pay. Client falls back to this string on several failure paths.
Diagnose and fix
1. Admin: finish Apple Pay in Authorize.net; upload merchant identity cert/key; set domain; verify with Apple.
2. Site must be HTTPS on the verified domain.
3. Member: use Safari / supported device, or pay by card instead.
4. Fix Apple Pay domain is not configured first if domain validation throws that error.