1, network connection problem. Please confirm that the device is connected to the Internet and the network connection is normal.
2.App Store update. Sometimes the app store will be updated, which makes some functions temporarily unavailable. You can wait a while or try restarting the App Store.
3. Restrict downloading. Some dials will be restricted in certain areas or certain devices. You can try to change the network or equipment, or contact Huawei customer service for help.