Hi there! I understand your Magic Jigsaw Puzzles app is freezing on your Mac with OS X 10.15.7. Let’s try to get this sorted out. Could you tell me a bit more about when the freezing happens? For example, does it freeze right when you open the app, or during a puzzle? Also, have you noticed if it happens with all puzzles or just some levels?

Meanwhile, here’s a quick checklist of common fixes we can try step-by-step:

1. Restart Your Mac: Sometimes a fresh start clears up temporary glitches. Just click the Apple menu and choose Restart.

2. Make Sure the App is Updated: Open the App Store, go to Updates, and check if Magic Jigsaw Puzzles has an available update. Running the latest version can resolve many bugs.

3. Check Disk Space: Ensure you have at least 1GB of free disk space as low space can cause apps to hang. On your Mac, click the Apple menu > About This Mac > Storage to see your available space.

4. Quit Other Applications: Running many apps at once might limit resources for the game, so try closing others to improve performance.

5. Clear App Cache or Reset If Possible: On Mac, there’s no direct "reset" option like on mobile, but you can try quitting the app and deleting its cache or preference files if you are comfortable with that. I can guide you through this if you want.

6. Reinstall the App: If things still freeze, uninstalling and reinstalling Magic Jigsaw Puzzles from the App Store often helps. This can clear corrupted files.

If you've tried any of these before, let me know which ones, so I can focus on other options. Also, if you see any error messages or specific behavior, that info will help me troubleshoot better!

Are you okay with trying these out? I’m here to walk you through each step calmly.