1. If our App Store doesn't connect, we can try shutting down the App Store and then reopening the App Store for a look (recommended reading: Unable to connect to the App Store)
2. If the above method is not used we can click the "Settings" button in the iOS interface to enter.
3. Then we find the setting in the "Wireless LAN" click on it.
4. After entering the wireless to the ipad Air we will have an exclamation mark icon next to the wireless, then click it to enter.
5. Furthermore, we click on the wireless network parameter next to the IP address on the right side of the DNS column, as shown in the figure
6. Set up a DNS for the wireless network of the ipad Air, which can be set to 8.8.8.8 or 114.114.114.114. Let's click "Wireless LAN" again.
7. Here we will also be able to click on the view, where we can see more detailed information.
8. After this setup, it is estimated that the App Store shop can be opened.