Hi there! I’m John Nguyen from SOLARMAN Smart support. I understand that you're having an issue with configuring the app, especially with the region selection being empty. That can be quite frustrating!

To help you out effectively, could you please provide me with a bit more context? Are you facing this issue during the initial setup of the app, or has it occurred after already using it? Additionally, have you tried restarting the app or your device yet?

Let's see if we can get this sorted out!

during initial setup (after deleting the app before), restarted and reinstalled several times

Thank you for the details! Since this is happening during the initial setup after reinstalling the SOLARMAN Smart app, let’s try a few things that might help get the region selection working:

1. Check Wi-Fi Connection: Ensure that your device is connected to a stable Wi-Fi network. Sometimes, an unstable connection might cause issues in loading configurations during setup.

2. Enable Location Services:
- Go to your Settings on your device.
- Navigate to Privacy > Location.
- Make sure that location services are enabled for the SOLARMAN Smart app. This can sometimes help in detecting the right region.

3. Use a Different Network: If possible, switch to a different Wi-Fi network or try using mobile data. Occasionally, network configurations might interfere with the app's ability to load specific regions.

4. Clear App Data:
- Open Settings > Apps > SOLARMAN Smart.
- Tap on Storage and then select Clear Data and Clear Cache.
- After that, try reopening the app.

5. Manual Input: If the region selection remains empty, see if there’s an option to enter your region manually, sometimes apps allow this feature even if the auto-detection fails.

If you’re still facing issues after trying these steps, it might be helpful to check the user manual for any troubleshooting details or specific settings you might have missed. Here's a concise guide which can be useful: User Manual for SOLARMAN Smart APP.

Please try these steps and let me know how it goes! Are you satisfied with the solution I provided?