Hi! I see that your Sandata app is stuck on the opening splash screen on your Mac running OS X 10.15.6. Let’s work through this together to get it up and running.

First, could you tell me if this started happening after an update to the app or your OS? Also, have you tried any troubleshooting steps so far, like restarting your device or reinstalling the app?

In the meantime, here are some initial steps you can try:

1. Restart your Mac: Sometimes, simply restarting can clear out any temporary issues affecting apps.

2. Force quit the Sandata app:
- Click the Apple menu () in the top-left corner.
- Select "Force Quit..."
- Choose Sandata from the list and click "Force Quit."
- Then try reopening the app.

3. Clear app cache or data if possible: On macOS, this often means deleting some preference or cache files. You can:
- Open Finder, press Command + Shift + G, and enter ~/Library/Caches and look for any folders related to Sandata. Move those to Trash.
- Also check ~/Library/Preferences for any Sandata-related files and remove them.

4. Reinstall the app: Delete the Sandata app from your Applications folder, then download and install the latest version from the official source.

5. Check network connection: Some apps need an active and stable internet connection during startup. Try to connect via a reliable Wi-Fi network.

If none of this helps and the app remains stuck on the splash screen, there might be an issue with app compatibility or corruption.

Also, if you have any VPN or firewall software enabled, sometimes that can interfere with app connectivity during launch; try disabling them temporarily.

Let me know what you’ve tried and how it goes! If needed, we can dive deeper into logs or settings.

Are you satisfied with this initial plan to try?