Hi! I understand your Shuffles app crashes whenever you try to open it and sign in on your Android device. Let’s dig into this and get it sorted.

To start, can you tell me if you’ve tried any fixes already, like reinstalling the app or clearing its cache? Also, do you see any error messages or does it just close suddenly?

Meanwhile, here are some steps tailored for your Android 10 device with a WebKit-based browser that might help:

1. Clear Cache & Data for Shuffles App:
- Go to Settings on your device.
- Tap on Apps & notifications (or just “Apps”).
- Find and select Shuffles.
- Tap on Storage & cache.
- First, tap Clear cache.
- If that doesn't help, tap Clear storage/data (note this may log you out or reset any local app settings).

2. Update or Reinstall the App:
- Sometimes an outdated or corrupted app version causes crashes.
- Uninstall the Shuffles app.
- Open the Google Play Store and reinstall the latest version.

3. Check for System Updates:
- Go to Settings > System > Software update.
- Make sure your Android OS is up to date, as older versions sometimes conflict with new apps.

4. Restart Your Device:
- After clearing cache/data or reinstalling, reboot your phone before trying again.

5. Check Internet Connection:
- Since you’re signing in, ensure your internet connection is stable.
- Switch between Wi-Fi and mobile data to see if there’s any change.

If you’ve done these and it still crashes, there could be a deeper issue. Some users have reported crashes related to app version compatibility or account sign-in problems, but those tend to be fixed by app updates or clearing data.

Could you let me know which step you've tried so far and what happens when you do? This way, I can guide you further!

Are you able to try these steps now?