Hi there! I understand that your PolyBuzz app crashes when you open it and shows error screens during chats on your iPhone with iOS 18.7. Let’s get this sorted out together.

First, could you let me know if you’ve tried any steps already, like restarting the app or your phone? Also, is your app updated to the latest version from the App Store?

In the meantime, here’s a straightforward approach to try:

1. Force Close and Restart the App
- Double-click the Home button (or swipe up from the bottom on iPhone without a Home button) to reveal your recent apps.
- Find PolyBuzz and swipe it up to close it completely.
- Then, open the app again and check if it still crashes.

2. Check Internet Connection
- Make sure your iPhone is connected to a stable Wi-Fi or cellular network since connectivity issues can cause crashes during chat loading.

3. Restart your iPhone
- Hold down the side button and either volume button until the slider appears, then slide to power off.
- Turn it back on after about 30 seconds and try the app again.

4. Update the App
- Open the App Store and tap your profile icon at the top. Scroll to see if PolyBuzz has an update available. If yes, update it.

5. Clear App Cache (if applicable)
- iOS doesn’t provide a direct way to clear cache without reinstalling. So, if the above don’t work, you can try deleting and reinstalling the app:
- Tap and hold the PolyBuzz app icon, choose “Remove App,” then select “Delete App.”
- Go back to the App Store and reinstall it fresh.

If these steps don't fully resolve the crashes and errors, it might be worth checking if there’s a server-side issue impacting the app or if your account has any problems.

Let me know what you find after these steps, and if the crash persists, I can guide you through more advanced troubleshooting or look into any service alerts for PolyBuzz.

Are you satisfied with this initial support, or shall we dig deeper?