Hi! I see you're having trouble opening the Fox Nation app on your Fire Stick 2nd Gen even after reinstalling it. Let's work through this together and see if we can get you streaming again.

First, just to understand better—when you say it "won’t open," do you mean the app crashes immediately, it sits on a loading screen, or something else? Also, is your Fire Stick software fully updated?

Here's a step-by-step approach we can try:

1. Restart Your Fire Stick Device
Sometimes a simple restart can clear temporary glitches. You can do this by unplugging the Fire Stick from the power outlet, waiting about 30 seconds, then plugging it back in and powering it on.

2. Update Fire Stick Software
Make sure your Fire Stick is running the latest software version:
- Go to Settings on your Fire Stick main menu.
- Select My Fire TV (or Device).
- Choose About, then select Check for Updates.
- If an update is available, install it and restart the device.

3. Clear App Data and Cache
The app’s stored data might be causing the issue, even after reinstall:
- Go to Settings > Applications > Manage Installed Applications.
- Scroll to Fox Nation, then select Clear Cache and Clear Data.
- Try launching the app again.

4. Verify Correct Account Login
Ensure you are logging in with the correct Fox Nation account. Sometimes, if the login doesn’t register properly, the app might not proceed past the opening screen.

5. Reinstall the App
Since you’ve already reinstalled, after clearing data and cache, try uninstalling and reinstalling the app once more after completing the above steps.

If after trying these steps the app still won’t open, it could be useful to check if there are any temporary service outages on Fox Nation’s side or known compatibility issues with your Fire Stick model, but usually these steps resolve the problem.

Would you like me to guide you through these step-by-step, or have you tried any of these already? Let me know!