When the App Store cannot download or update apps, first troubleshoot it this way.
Check Network and Account Status
First, switch to a stable network, then open the App Store to confirm whether your account is logged in properly. If you encounter a password prompt, do not keep trying repeatedly. First, verify that the account and password have been copied in full.
Confirm the Download Account for the App
App updates typically require verification of the account that originally downloaded the app. If different accounts were used to download apps on your device, you may be prompted to enter the old account password during updates.
What to Do If the Issue Persists
You can close and reopen the App Store, restart your device, and then try again. If the account is disabled, verification fails, or the region is unavailable, please keep a screenshot of the prompt and submit the order information according to the product after-sales policy.
Do not frequently modify device settings before confirming the cause, as this may make troubleshooting more difficult.

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