Hi there! I understand you’re having trouble with the Lingumi app—it’s no longer working and you can’t find it in either the App Store on your iPhone or the Google Play Store. Let’s dig a little deeper to get you back up and running.

To start, could you please tell me if you had Lingumi installed on your device before? Also, have you tried searching for it exactly as “Lingumi” in the App Store? Sometimes apps might temporarily get hidden or removed for updates or region-specific reasons.

In the meantime, here’s what you can try step-by-step on your iPhone (iOS 18.4.1):

1. Search Carefully in App Store: Open the App Store and use the search tab to type “Lingumi.” Make sure there are no typos or extra spaces.

2. Check Hidden Purchases: Sometimes apps you purchased or downloaded earlier might be hidden—go to your profile icon on the top right, tap Purchased > My Purchases, and look if Lingumi appears there. If yes, you can reinstall from there.

3. Check Region Settings: Lingumi might not be available in some regions temporarily. Go to Settings > your Apple ID > Media & Purchases > View Account > Country/Region to confirm it’s set to your usual location and not changed.

4. Existing Installation Use: If you still have Lingumi installed on any device, you can continue using it even if it temporarily disappears from the store.

5. Alternative Access: Lingumi may also allow you to use the service via web or other supported devices.

If after these steps you still cannot find or use the app, it’s possible the app has been removed temporarily or regionally from the store. I’ll check if there’s any official update on this right away. Meanwhile, could you share if you are using a specific Lingumi subscription or account? That helps me suggest an alternative access or how to preserve your progress.

Looking forward to your reply so I can assist further!