Hi there! I understand you're experiencing crashes specifically when playing the Twin Turbo game mode in the Chrome Valley Customs app on your iPhone with iOS 18.7.1. I'd like to help get that sorted out for you.

Could you first tell me a bit more about what happens when the crash occurs? For example:
- Does the app close immediately or after a certain action in Twin Turbo mode?
- Have you noticed if the crash happens every time you enter that mode or only sometimes?
- Have you tried any fixes already, like restarting your device or reinstalling the app?

In the meantime, here are some focused steps we can try, starting with the basics:

1. Restart your iPhone: This can help clear any temporary memory issues that might cause the crash.
2. Update the app: Make sure you're running the latest version of Chrome Valley Customs from the App Store, as updates often include bug fixes.
3. Clear app cache (if possible): iOS usually manages this automatically, but reinstalling the app can also clear cached files that might be causing trouble.
4. Check your internet connection: Sometimes refreshing the connection by toggling Airplane mode on/off or restarting your Wi-Fi router can help.
5. Try running the game mode offline (if that's an option) to see if the crash is related to networking issues.

If you’ve tried these already or the issue remains, please let me know. There have been reports that this specific mode was temporarily disabled for some players while the developers fix underlying issues, so I can check on the current status for you as well.

Would you like me to guide you through these steps now? Or provide updates from the support team regarding known Twin Turbo crashes?