Why can't I get a train ticket on 12306?

Demonstration model: iPhone13 & & Huawei P50 &；; & Xiaomi 1 1 system version: IOs15&; & the voice of harmony & miui12.5app version: railway 12306v5.4.1kloc-0/,different ticket purchasing channels:12306, as long as you operate on your mobile phone or computer, you can successfully purchase tickets. It is convenient to buy tickets at the station. 12306 If you need to change your visa or refund it, you can change your visa or refund it successfully on your mobile phone or computer.

2. Different refund channels: If it is convenient to change or refund the ticket after purchase, you need to queue up at the ticket purchasing outlets to change and refund the ticket.

3. Different ticketing agents: Railway 12306 website directly buys tickets from official website, which is convenient for third parties to purchase tickets.