We want to change the same train ticket on WeChat, but it always shows that the verification is unsuccessful. What happened?

There are two situations in which verification fails. The first one is that you are not bound to the 12306 train ticket network, and there is no information about you on it. The second is that you haven't bought a train ticket for several years, and then you need to go to the train station to buy a ticket, and then you can book tickets online.

If the man-machine verification fails all the time, it is recommended that you bring your ID card to the train station window and let the staff handle it for you. Generally, you will re-verify the success according to the instructions of the staff.