Hi! I see you're getting an "invalid database" error with the Fahlo Animal Tracker app on your iPhone running iOS 18.5. That can definitely stop you from tracking your animals properly. To help you best, could you tell me when exactly this error shows up? For example, does it happen right after you open the app, when you try to sign in, or at some other point?

In the meantime, here are some initial steps we can try to fix this:

1. Restart Your iPhone: Sometimes, a fresh start can clear temporary glitches.

2. Update the Fahlo App: Make sure you have the latest version installed on your iPhone. Open the App Store, tap your profile icon, and check for updates.

3. Clear Cache/Data: iOS apps don’t offer manual cache clearing like Android, but you can uninstall and then reinstall the Fahlo app. This will reset the app's local data and can solve database corruption issues.

4. Sign Out and Sign Back In: If you can access your account, try logging out and then logging back into the app to refresh your session and data.

5. Check Your Network Connection: A weak or unstable internet connection could cause data retrieval issues, leading to database errors.

If you already tried these or the issue continues, please let me know, and we can dive deeper into possible fixes, including checking for any app-specific server issues or account problems.

Are you able to try these steps and tell me how it goes?