Hi there! I see you're having trouble uploading with the Coconote app on your Mac. To help you out better, could you tell me a bit more? For example, are you uploading audio, video, or notes? Also, do you get any error messages or does the upload just fail silently?

Meanwhile, here are some general steps you can try to fix upload issues on your Mac with OS X 10.15.7:

1. Check Internet Connection: Make sure your Mac has a stable internet connection. Sometimes weak Wi-Fi can interrupt uploads.

2. Browser and App Updates: If you're uploading via browser or the app, ensure it’s fully updated. Using the latest version helps prevent compatibility problems.

3. Clear Cache and Cookies: Sometimes cache and cookies can interfere with uploads. You can clear these in your browser preferences.

4. Disable Ad Blockers and Extensions: Ad blockers or browser extensions might block some app functionality. Try disabling them temporarily.

5. File Size and Format: Confirm the file you’re uploading is within the allowed size limits and in a supported format.

6. Retry Upload: Sometimes a simple retry after some time helps if the servers are under load.

7. Try a Different Network: If possible, try uploading from another network to rule out network-specific blocks.

If you see any specific error like “HTTP 400” or “403 Forbidden,” that can hint at particular issues such as invalid request or access permissions.

You can also find detailed troubleshooting steps from Coconote’s help center here: https://coconote.app/support and a guide for connection issues here: https://coconote.app/notes/c43dd9a0-98fa-445b-8b54-8b0e88923673

Let me know what you observe or if you get any error messages, and we’ll go from there! Are you comfortable trying these initial steps?