To resolve the issue of the Scavenger Hunt! app loading only 80% and freezing, follow these steps:

1. Check for App Updates: Make sure the app is updated to the latest version. Go to the Google Play Store, search for "Scavenger Hunt!", and check if there's an option to update. If an update is available, install it.

2. Clear App Cache: Clearing the app cache can resolve many loading issues. To do this:
- Go to your device's Settings.
- Tap on Apps or Application Manager.
- Find and select Scavenger Hunt!.
- Tap on Storage.
- Select Clear Cache.

3. Restart Your Device: Sometimes, a simple restart can fix temporary glitches. Restart your Android device to refresh all running apps and processes.

4. Check Internet Connection: A slow or unstable internet connection might cause the app to freeze. Ensure you are connected to a strong Wi-Fi network or have a good mobile data signal.

5. Reinstall the App: If the issue persists, uninstall the app and then reinstall it. To uninstall:
- Go to your device's Settings.
- Tap on Apps.
- Select Scavenger Hunt! and choose Uninstall.
- Reinstall the app from the Google Play Store.

6. Contact Support: If none of the above solutions work, consider reaching out to the app's support team. This can often be done through the app itself or on the official website.

You can also check for user discussions and possible ongoing issues or solutions on platforms like Reddit, where users report similar experiences and troubleshooting tips can also be found - learn more - learn more - learn more - learn more - learn more.