First make sure the device is connected to the Internet and can access the webpage normally
Change the date and time in settings to 自动, and wait a few seconds for the system to automatically obtain the time.
Exit "Settings" in the background, then re-enter "Settings" and click "Trust"
If it still doesn’t work, disconnect WiFi and try again using 4G. If the iPad is not a 4G version, use your iPhone to turn on 4G to create a WiFi hotspot, let the iPad connect to this hotspot and then click Trust.
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First make sure the device is connected to the Internet and can access the webpage normally
Change the date and time in settings to
自动, and wait a few seconds for the system to automatically obtain the time.Exit "Settings" in the background, then re-enter "Settings" and click "Trust"
If it still doesn’t work, disconnect WiFi and try again using 4G. If the iPad is not a 4G version, use your iPhone to turn on 4G to create a WiFi hotspot, let the iPad connect to this hotspot and then click Trust.