Hello friend hope it can help:
Solution:
1 : Open your FusionSolar App and go to "My Account" (Right bottom isde of teh App).
Open the icon with the "House + Sun + Huawei".
2 : This will bring you the FusionHome App with 1- Wifi icon, 2 - Device, 3 - Toolkit. Now select: 2 - Device.
3 : You should now see your Sun2000 system if it is correctly connected to your WiFi. Select it and log in !
If you do not see your Sun2000 system then use option 1 - Wifi first to connect it.
https://forum.huawei.com/enterprise/en/fusionsolar-shows-no-data-in-portal-a-possible-solution/thread/618612-100027Thanks!