Hi there! I understand your Jigsaw Master app is not loading and keeps going to the lock screen on your Android device. Let's try to get it working again.

First, can you tell me a bit more? For example:
- Does the app open at all before it goes to the lock screen?
- Is your device locking automatically due to inactivity?
- Have you tried restarting your device already?
- Any recent changes like app updates or system updates?

In the meantime, here’s a step-by-step approach you can try:

1. Restart your device: This clears temporary glitches and frees memory. Simply power your Android device off and then on again.

2. Force close the app:
- Go to Settings > Apps > Jigsaw Master.
- Tap "Force Stop" to fully close it. Then try reopening the app.

3. Clear app cache and data:
- In Settings > Apps > Jigsaw Master > Storage, tap "Clear Cache" first.
- If that doesn’t help, tap "Clear Data" (note: this might reset your app settings or progress).

4. Check for updates:
- Go to the Google Play Store, search for Jigsaw Master, and ensure it’s updated to the latest version.

5. Keep device unlocked while using app:
- Temporarily set your screen timeout to a longer duration (Settings > Display > Screen timeout) so the device does not lock while you are playing.

If these don’t resolve the issue, it could be a compatibility or app-specific problem. Let me know what you’ve tried so far or any details you noticed—then I can help you further or look into deeper fixes!

Are you able to try these steps now?