Hi there! I understand your Jibble app is not working on your Macintosh with OS X 10.15.7. To help you better, could you please tell me more about what exactly is happening? For example, is the app not opening at all, freezing, or showing any error messages?

While you share that, I’ll guide you through some initial steps:

1. Check your internet connection—Jibble needs a stable connection to work properly.
2. Make sure you are using the latest version of the Jibble app compatible with macOS Catalina (10.15.7).
3. Try quitting the app completely and restarting it.
4. Restart your Mac to clear any temporary glitches.
5. If the app has any pending synchronization notifications, check and clear those.

If you have already tried these or if the issue persists, please let me know so we can dive into more advanced checks, like looking into any error logs or account issues.

Are you able to provide more details on what happens when you try to use the app? That will help me assist you better!