Hi there! I understand that the Unlockr app starts opening but then closes immediately, so you can't use it. Could you tell me if this happens right after you tap the app icon or after you see some initial loading screen? Also, have you tried any steps like restarting your phone, or reinstalling the app so far?

In the meantime, here’s a straightforward approach to try fixing this:

1. Restart your device: Sometimes a simple reboot clears out any temporary glitches in memory affecting apps.

2. Clear the app cache and data:
- Go to your Android Settings.
- Tap on "Apps" or "Applications."
- Find and select the Unlockr app.
- Tap “Storage.”
- Select “Clear Cache” first, and then “Clear Data” (note this may reset app settings).

3. Check for app updates: Open Google Play Store, search Unlockr, and if there's an update available, install it. Updates often fix bugs causing crashes.

4. Reinstall the app: Uninstall the app from your device, then download and install it again from Google Play Store. This can fix corrupted installations.

5. Check permissions: Make sure Unlockr has all the permissions it needs under Settings > Apps > Unlockr > Permissions.

6. Free up device resources: Close background apps and ensure your device isn’t running low on storage space.

If none of these steps work, there might be an issue with how Unlockr interacts specifically with your Android 10 device or the WebKit browser environment. At that point, let me know and we can try more advanced fixes or check for any known issues with your exact setup.

Does this sound good? Let me know what you’ve tried or how it goes!