The invoice templates scaffolded by getpeppr init pointed at a fictional
German recipient, so the canonical init → validate → convert → send flow was
guaranteed to fail on a sandbox account. The templates and the README example
now target the getpeppr sandbox test receiver (9925:BE0314595348) — a
scaffolded invoice sends successfully right away.
The console helps too: in sandbox, when a send fails because the recipient is not the test receiver, the invoice status banner now shows a hint pointing at the cause instead of a bare failure.
See the CLI guide to get started.