Hi! I understand your Sengled Home app has stopped connecting and working even after uninstalling and reinstalling it. Let's get this sorted out step-by-step.

First, can you tell me a bit more about what specifically happens when you try to open or use the app? For example, does it fail to log in, does it crash instantly, or does it just not communicate with your devices?

Meanwhile, here’s a general troubleshooting approach for connection issues after reinstalling the Sengled Home app on your Android 10 device:

1. Restart your phone: Sometimes a simple restart can resolve lingering app or network glitches.

2. Clear the App Cache and Data:
- Go to Settings > Apps > Sengled Home App
- Tap on Storage
- Choose 'Clear Cache' and then 'Clear Data' (Note: clearing data may require you to log in again)

3. Check Network Connection:
- Ensure your phone is connected to a stable 2.4 GHz Wi-Fi network (Sengled devices often don’t work well with 5 GHz).
- Try toggling Wi-Fi off and on.
- Temporarily disable any VPN or firewall apps that might block the connection.

4. Reset Sengled bulbs (if your devices are involved):
- If bulbs are not connecting, try turning the bulb off and on quickly 5 to 10 times (this reset method varies by bulb model).

5. Reinstall and Launch Again:
- After these steps, uninstall the app again, then reinstall freshly from the Google Play Store.

6. Update Device Software:
- Make sure your Android 10 OS is up to date with the latest patches.

Does any part of this match what you’ve tried? If you did clear cache or network checks already, how about resetting the bulbs? Let me know how you’d like to proceed or if you need guidance on particular steps.

Are you currently trying to connect just the app, or also specific Sengled devices like bulbs or hubs?

This will help me give you the most precise support.