Hello! I understand the GasBuddy app shows a black screen on your Mac running OS X 10.15.7 and previous fixes you tried didn't work. Let's see if we can figure this out together.

First, just to clarify:
- Are you using the GasBuddy app natively on your Macintosh, or are you accessing it through a web browser?
- When you say "none of the fixes listed works," could you share which steps you've already tried? That way, I avoid repeating them and focus on alternatives.

In general, for a black screen issue in the GasBuddy app, here are some Mac-specific suggestions:

1. Force Quit and Restart the App
- Click the Apple menu (top-left corner), choose "Force Quit."
- Select GasBuddy if it appears, then click "Force Quit."
- Relaunch the app to see if this resolves the issue.

2. Check for App Updates
- Since you are on OS X 10.15.7 (Catalina), open the Mac App Store, go to the "Updates" tab, and see if GasBuddy has an update pending.
- Update if available.

3. Reinstall the App
- Delete the GasBuddy app by dragging it to the Trash.
- Restart your Mac.
- Download and install the latest version of GasBuddy from the Mac App Store or official website.

4. Check Graphic Settings and Permissions
- Sometimes, apps show a black screen if they can't access graphics hardware properly.
- Go to "System Preferences" > "Security & Privacy" > "Privacy" tab; check if GasBuddy has necessary permissions (e.g., accessibility or files & folders).
- Also, confirm your Mac's graphics drivers and OS system updates are current (though Catalina 10.15.7 is the latest for that version).

5. Try Running in Safe Mode
- Restart your Mac and hold down the Shift key to enter Safe Mode.
- Open GasBuddy in Safe Mode to see if the black screen persists.
- If it works in Safe Mode, some other apps or extensions may conflict with GasBuddy.

6. Check Console Logs
- Open "Console" app (Applications > Utilities) and look for any error messages related to GasBuddy when you open it. This info can help diagnose deeper issues.

If still no luck, since the black screen can sometimes be a bug from the app's side, you might try logging out and back in (if possible), or reporting the issue directly from the app by shaking the device in iOS—but for Mac, you may email their support at [email protected] with details.

Let me know what you’ve tried and what happens with the above steps. We can take it further from there! Are you satisfied with this initial guidance?