Hi there! Sorry to hear you're having trouble logging in to the RoadReady app on your iPhone with iOS 18.6. Let's work together to get you back in.

Can you tell me a little more about what's happening when you try to log in? For example:
- Are you seeing any error messages?
- Does the app freeze, get stuck loading, or just reject your credentials?
- Have you tried any steps already, like restarting the app or phone?

While I wait for your details, here are some common and simple things to try first:

1. Restart the app: Swipe up from the bottom of your screen (or double-click the Home button) to open the app switcher, then swipe the RoadReady app off the screen to close it fully. Reopen it and try logging in again.

2. Check for app updates: Make sure your RoadReady app is up-to-date by going to the App Store and seeing if an update is available. Sometimes login issues occur if the app version is outdated.

3. Restart your iPhone: Hold the side button and volume up button until you see the power-off slider. Turn your phone off, wait a few seconds, then turn it back on and try again.

4. Delete and reinstall the app: Delete the RoadReady app, then go to the App Store and download it fresh. This ensures you have the latest version and clears any corrupted files.

If none of those work or if you're hitting a specific error message, please let me know. There are also reports of temporary login issues with RoadReady on their Facebook page, which they're working to resolve2. So it might be a momentary server issue as well.

Could you share what happens exactly when trying to log in? That way, I can provide the best next steps or escalate if necessary.