Identity verification can fail for several boring reasons. Most are fixed by light, a clear photo, or a wait.

Four small causes cover almost every silent failure.
If verification fails with no clear message, one of these is usually the cause:
Verification needs a clear passport photo, a stable network, an up-to-date app, and no conflicting face data. Any one of those breaks it.
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 verification keeps failing for no stated reason, the kit gives the decision tree that isolates the exact cause.
Four questions that point to the one fix that applies to your case.
Which phone models and app versions fail most, so you can pre-empt it.
The whole checklist as a printable card for low-signal moments.
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 it keeps failing after you have tried the basics:
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.