I grabbed the train ticket with the official WeChat account of Tongcheng Tourism, but the APP of Tongcheng Tourism showed that I didn't grab it and I couldn't see the information. What happened?

It's not important to make sure you get the ticket! The inquiry method is: download the official website Railway 12306 client, register and log in according to the prompts on the page, click the order inquiry, click the no-travel order, click the inquiry and the ticket name and number will appear, and then click the ticket details. If found, the reservation is successful. When you take the bus, you can go to the ticket window of the railway station or the ticket vending machine to pick up the ticket. I hope I helped you. I'm very satisfied with this compliment. Give it a compliment. Thank you!