Change (改签) to another train, or refund (退票) with a fee that shrinks the earlier you act.

Refund fees shrink the earlier you act.
If your plans changed, the app lets you change or refund — with a fee that depends on timing:
Refund fees are 5% over 48h before, 10% at 24-48h, 20% under 24h. Change (改签) to another train is usually free of a separate fee but subject to fare difference.
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.
The kit gives the refund-fee table and the station-window script for when the app blocks self-service change.
Exact fees by time-to-departure, so you know the cost before tapping.
When self-service change is blocked and you must visit a window.
The fee table as a printable card.
The notice is on the wall. The parcel still has your name on it.
One question, two paths. Your answer picks the road.
When the app says no, the counter can always say yes.
If the app will not let you change or refund:
Four levels deep — a closed gate is never the end of the trip.

Station staff can usually solve in one minute what the app refuses to.
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.