At the counter, scan, fail. Stay calm, switch apps, or pay cash — most times it is a one-tap retry.

At the counter, a fail is usually one retry away.
If you are at the counter, scan the code, and the payment fails, it is usually transient:
A failed checkout is often a brief network hiccup, a per-transaction risk check, or one app's temporary reject. It rarely means the card is dead.
Every case shows the diagnosis and the first step - free. The full step-by-step fix for this exact case, the decision tree, and the offline kit are $9.99.
When checkout fails repeatedly, the kit gives the cashier phrase and the decision tree for what to do next without panic.
Exactly what to say so the line does not stall.
Which failure at checkout means retry vs. which means switch vs. which means cash.
The phrase and tree as a printable card for the counter.
What you are reading is free. The shut crate is the part you carry.
Two doors, one question. Walk through the one your answer opens.
Direct WeChat binding fails far more often than this two-hop route.
If every method fails at the register:
Four levels deep — a failed payment never strands you.

Someone behind the counter can usually unblock you faster than any app.
Most travellers know about three of these before they fly. This one is often not one of them.
Verified against these sources on 2026-09-20.