Hi there! I understand you're having trouble with the Duke Energy app crashing and it won't let you sign in on your iPhone running iOS 18.6. Let's see if we can get this sorted out together.

To start, here’s a step-by-step approach we can try:

1. Close and reopen the app: Sometimes, simply closing the Duke Energy app completely and reopening it can clear temporary glitches.

2. Ensure your app is up to date: Check the App Store to confirm you've got the latest version of the Duke Energy app installed.

3. Restart your iPhone: A quick restart can often resolve app crashes by clearing temporary cache.

4. Clear app cache or data: While iOS doesn’t have a direct cache clear like Android, deleting and reinstalling the app essentially resets the app cache and data. To do this:
- Press and hold the Duke Energy app icon until a menu appears.
- Choose 'Remove App' then 'Delete App'.
- After deletion, go back to the App Store and reinstall the app.

5. Check your internet connection: Make sure you have a stable Wi-Fi or cellular connection, as poor connectivity can cause app issues.

6. Try logging in after reinstalling: Once reinstalled, open the app and attempt logging in again.

If after these steps the app still crashes or won’t let you log in, please let me know if you get any error messages or exactly when the crash happens (e.g., right on opening the app, after entering your username/password, etc.). That additional detail will help me guide you further.

Are you okay with trying these steps now?

He keeps crashing, won’t let me sign in