Hi there! I understand you're having trouble with the Shonen Jump Manga & Comics app not showing any series. I’d love to help get this sorted for you. Just to clarify, when you open the app on your iPhone running iOS 18.6, do you see a completely blank screen, or do you see menus or categories but no manga titles inside? Also, have you recently updated the app or your device, or tried restarting it?

Meanwhile, here are some troubleshooting steps we can start with:

1. Make sure your iPhone has a stable internet connection (Wi-Fi or cellular). Sometimes, content won’t load without it.

2. Close the Shonen Jump app completely by swiping it away from the app switcher, then reopen it.

3. Check if the app is updated to the latest version available in the App Store — sometimes older versions have bugs or content issues.

4. If possible, try logging out of the app and logging back in to refresh your account’s content.

5. Clear the app cache if there's an option in settings, or alternatively uninstall and reinstall the app. This can resolve corrupted data causing content not to show.

6. Confirm that your subscription or membership (if any) is active and not expired, as that might limit content visibility.

Since you're on the latest iOS (18.6), the app should be compatible, so these steps usually help rule out common causes.

Could you please let me know if you’ve tried any of these already, or if you encounter errors when trying them? That way I can guide you with more specific steps.

Also, for completeness: some manga series may not be available on the app due to licensing or content rating restrictions but overall some series should still appear1 2.

Looking forward to your reply so we can get you reading your favorite series again!