Hi there! Thanks for reaching out. I want to get this sorted with you—just so I understand fully, when you try to create an account or log in as a guest in the NU app on your iPhone with iOS 18.6, what exactly happens? Are you seeing any error messages, or does the app just not respond to your attempts? Also, have you tried tapping on the specific login buttons in the app interface, like the "EROLABS account login" button mentioned in some discussions?

While you provide that info, I can outline some steps to get started:

1. Check Internet Connection: Make sure your iPhone has a stable internet connection via Wi-Fi or cellular data.
2. Restart the App: Close the NU app completely (swipe it away from the recent apps list) and reopen it.
3. Use the Correct Login Button: According to some user reports, the correct way to create an account or sign in is by tapping the “EROLABS account login” button on the left when you launch the app for the first time.
4. Guest Login Limitations: Keep in mind, guest logins are device-limited and might sometimes not allow full account creation or save progress across devices.
5. App Updates: Ensure the NU app is updated to the latest version available on the App Store.

If these don't resolve it or you get a specific error, let me know the message or behavior you see. That way, I can help dig deeper—maybe it’s a settings issue or a backend problem we can verify.

Could you also confirm if you’ve tried any of these already? That way I won’t suggest repeating steps. Looking forward to your reply!