Hi! I see you're experiencing a grey screen when using the Smash Ball app on your iPhone with iOS 18.7. I'd like to help you get this fixed. To start off, could you tell me a bit more about when exactly the grey screen appears? For example, does it happen right after launching the app, after selecting some options, or at another point? Also, have you noticed if the app shows any error messages or behaves unusually before the grey screen?

Once I have a bit more detail, I can guide you step-by-step to fix it. Meanwhile, here are some initial and easy steps you can try:

1. Force Close and Reopen the App
Double-click the Home button or swipe up from the bottom (depending on your iPhone model) to open the app switcher. Then swipe the Smash Ball app off the screen to close it. After that, reopen it and see if the grey screen is still there.

2. Restart Your iPhone
Press and hold the side button and volume up (or down) button until the power off slider appears. Slide to power off. Then turn your phone back on by holding the side button.

3. Check for App Updates
Go to the App Store, tap your profile icon at the top right, and scroll to see if there’s an update available for Smash Ball. Installing the latest version often fixes bugs.

4. Reinstall the App
If the problem persists, try deleting the Smash Ball app and reinstalling it from the App Store. This can clear corrupted files that might cause display issues.

If you’ve already tried these, let me know, and we can explore deeper fixes, such as clearing cache, checking app permissions, or troubleshooting settings specific to iOS 18.7.

Could you please confirm which of these you have tried and how it went? That way I can tailor the next steps perfectly for you!