Hi there! I see you're having trouble with the Crossword Solver app on your iPhone running iOS 18.7.1. Could you share a bit more about what exactly isn't working? For example, is the app not opening, not loading puzzles, or is there a particular feature giving you trouble? That way, I can guide you more precisely.

In the meantime, here are some common quick fixes you can try to get started:

1. Restart the app: Swipe up from the bottom (or double-click the home button if your iPhone has one) to bring up the app switcher, then swipe the Crossword Solver app off the screen to close it completely. Relaunch the app afterwards.

2. Check your internet connection: Make sure your iPhone is connected to a reliable Wi-Fi or cellular network, as the app needs internet to load clues and solutions.

3. Clear cache or app data if possible: Although iOS apps don’t usually have a built-in cache clear, you can try uninstalling and reinstalling the Crossword Solver app to get a fresh start.

4. Update the app: Open the App Store, tap your profile picture at the top right, scroll to see if Crossword Solver has an update, and install it if available.

If you tried some or all of these steps already, please let me know so I can offer more tailored troubleshooting!