Hi! Sorry to hear that the Purp app is crashing as soon as you open it on your Mac with OS X 10.15.7. To help narrow this down, could you let me know if this started happening recently after an update or any system change? Also, does the app crash immediately on launch, or does it show some content before crashing?

In the meantime, I can guide you through some steps that often resolve this type of issue:

1. Restart Your Mac: Begin with a simple restart of your computer to refresh system resources.

2. Check for App Updates: Make sure the Purp app is updated to the latest version available for macOS. Sometimes crashes are resolved by updates.

3. Reinstall the App: If updating doesn't help, try uninstalling the Purp app completely and then reinstalling it from the official source.

4. Check for System Updates: Though you have 10.15.7, verifying that no pending macOS security or supplemental updates exist can help with app compatibility.

5. Clear Cache or Preferences: Sometimes corrupted app data causes crashes. Purp may have cached files or preferences under your user Library folder. You could try locating and deleting them, but only if you're comfortable navigating macOS's Library folders.

6. Run the App in Safe Mode: Try starting your Mac in Safe Mode (by holding Shift during startup) and then opening Purp. This disables some background processes that might interfere.

7. Review Console Logs: If you feel comfortable, open the Console app to check crash logs related to Purp. This information is valuable if you need to contact purp support.

If you've already tried any of these steps, please let me know which ones, and we can explore other avenues or check for any reported outages or bugs.

Are you comfortable trying these steps, or would you like me to guide you through any in more detail?