Hi there! I understand you're having trouble uploading multiple photos at once from the BillionGraves app on your Mac, and the upload stalls after a single photo goes through. I'd be happy to help you get this sorted out.

To get started, could you please tell me a bit more about the situation? For example:
- Are you using the BillionGraves app directly on your Mac or on a mobile device synced with your Mac?
- Is your internet connection stable during the uploads?
- Have you noticed any error messages or does the upload just stop?
- Have you tried closing and restarting the app or your Mac?

While you gather that info, here’s a basic step-by-step that often helps with photo upload issues in BillionGraves:

1. Check Internet Connection: Make sure you have a stable Wi-Fi or wired internet connection, as a weak or intermittent connection can cause uploads to stall.

2. Restart the App: Close the BillionGraves app completely and reopen it. This can clear temporary glitches.

3. Update the App: Ensure you’re running the latest version of the BillionGraves app. If not, updating can resolve bugs related to uploads.

4. Upload Photos One at a Time: Since multiple uploads stall, try uploading one photo at a time intentionally to see if that consistently works without stalling.

5. Check Photo Size: Large photos can sometimes cause upload issues. Try resizing photos or using a lower resolution before uploading.

6. Clear Cache or Reinstall the App: If none of the above helps, uninstalling and reinstalling the app can fix corrupted app data impacting uploads.

7. Enable Location Services: BillionGraves app uses location data; make sure location services are enabled for the app in your system preferences.

If you can confirm if you’ve tried any of these or provide more details about your issue, I can guide you further with more targeted steps or check if there’s any ongoing issue with the app upload servers. Here's a helpful link in the BillionGraves support center about troubleshooting photo uploads as well: BillionGraves support photo upload issues

Looking forward to your reply!