1. Turn off your own network and turn on the "airplane mode" of the ipad.

2. Open the settings on the ipad, then slide directly to "Safiri Browser", and finally click to enter the browser settings.

3. Pull Safiri browser to the bottom, select "Clear History and Website Data" and confirm the clearing.

4. Turn off the ipad flight mode, then connect to WIFI or data network, return to the desktop, click on the ipad signature to verify the application, and re-verify.