Hi there! I can understand how that can be quite concerning. Let's see if we can get your SumOne app loading properly again.

Here are a few steps to try:

1. Restart Your Device: Sometimes, a simple restart can help clear cached data that might be causing the app to hang.

2. Clear Cache and Data:
- Go to Settings on your Android device.
- Select Apps or Applications.
- Find and tap on SumOne from the list.
- Click on Storage and then tap Clear Cache. If that doesn't work, you can also try Clear Data, but be aware that this might reset some app settings.

3. Update the App: Make sure you're using the latest version of the SumOne app. Head to the Google Play Store, search for SumOne, and see if there’s an option to update.

4. Check Internet Connection: Ensure your device is connected to a reliable Wi-Fi or mobile data network. Sometimes connectivity issues can cause problems loading apps.

5. Reinstall the App: If the above steps don’t work, uninstall the app, then reinstall it from the Google Play Store.

If you've tried these steps and the app still isn’t loading, it might be helpful to check if there are any known issues or updates available from the developers which are often shared on forums like Reddit. There’s a specific discussion regarding app loading issues there. You can check it out here for more insights.

Let me know how it goes! Are you satisfied with the solutions provided, or is there anything else you’d like to explore?