The till restarted.

Checking the last sale with the server… this takes a moment. Don't ring anything yet.

The last sale reached the server

Your last sale is safe.

It reached the server before the restart. Sale at 2:41 pm — $8.95, paid cash. The customer paid and the drawer math is right. Nothing needs ringing again.

Print a receipt only if the customer still needs one — the till never prints on its own after a restart.

Print the receipt again Start the next sale

The internet is down too

The last sale is saved on this till.

Nothing is lost. The sale is written down on this till and sends itself the moment the internet is back. Keep selling — every sale queues the same way.

Start the next sale

Behind this screen: the till durably writes every sale to its local queue BEFORE tendering — the D-08 durability spike on the real tablet will prove that, and it has NOT run yet (it gates M1). After any restart the till asks GET /api/status.php?event_id=… — a landed sale answers with its type and sequence; an unknown one is still in the local queue and re-sends. Asking twice is always safe.