Hi there! Sorry to hear that the Kalshi app is freezing on the first screen on your Mac. Let's work through this together. Can you tell me if you've tried restarting the app or your computer yet? Also, is this a recent issue, like after an update, or has it been happening for a while?

In the meantime, here are some initial steps you can try to fix the freeze on OS X 10.15.7:

1. Force quit the app and reopen:
- Click the Apple menu (top-left) > Force Quit.
- Select Kalshi app and click Force Quit.
- Then try opening the app again.

2. Restart your Mac:
Sometimes a simple restart clears temporary glitches.

3. Check for app updates:
- Open the App Store on your Mac.
- Click Updates tab and see if there is an update for Kalshi.
- Install any available update and try reopening the app.

If it still freezes after these steps, we can try clearing cached data or checking for any interfering software.

Have you seen any error messages or prompts during this? Also, do you use the app through a web browser or a dedicated Mac client?

Let me know how these steps go!