why pages app have problem?

Hey srxductrung,

We'd recommend trying the steps in this article as they can help resolve issues with apps not functioning as expected: If an app on your iPhone or iPad stops responding, closes unexpectedly, or won’t open - Apple Support

1. "Close and reopen the app
2. Force the app to close. Then open the app to see if it works as expected.
3.  
4. Restart your device
5. Restart your iPhone or restart your iPad. Then open the app to see if it works as expected.
6.  
7. Check for updates
8. To see if updates are available for the app, open the App Store, tap your profile icon, then scroll down to see if updates are available. If updates aren't available for the app, update the software on your iPhone or iPad.
9.  
10. Delete the app, then redownload it
11. Delete the app. When you do this, you might lose data that was stored in the app. Then redownload the app. Then check to see if the problem with the app is fixed."

Thanks!