The network signal is not good, which leads to the failure of the travel card system, so it will not be opened. You can refresh the network and turn it on again. Maybe there is something wrong with the mobile phone or the software. So I can't open it. At this time, you can turn off the phone and turn it on again, so that the phone can automatically connect to the network. If the network server crashes, wait until the system is repaired before entering. The network service was abnormal on August 2nd. As of noon today, the tourist card has resumed service.
Recently, new cases of COVID-19 have appeared in some provinces and cities in China. People need to check their travel cards when entering medical institutions to prove their epidemic prevention health.