Hi there! I understand you're having trouble finding the Tallinja app on your iPhone 17 App Store. Let me help you with that.

Sometimes, apps may not show up in the App Store due to regional settings, store restrictions, or account configuration. To get started, could you please let me know:

1. Which country or region is your Apple ID set to?
2. Have you tried searching for the app using the exact name "Tallinja"?
3. Are you using the default App Store app on your iPhone 17 with iOS version up to date?

Meanwhile, here are some steps you can try to locate and download the Tallinja app:

1. Check Region Settings:
- Go to Settings > Your Name > Media & Purchases > View Account > Country/Region, and verify it matches Malta or a supported region for the Tallinja app. Sometimes apps are only visible in certain countries.

2. Search Using Direct Link:
You can try opening this direct App Store link on your iPhone’s Safari browser and see if it redirects to the app page:
Tallinja App on Apple App Store

3. Update iOS and App Store App:
Make sure your iPhone 17 is running the latest iOS version and the App Store is functioning correctly.

4. Sign Out and Back Into App Store:
Sometimes signing out of your Apple ID and signing back in refreshes the available apps.

If after trying these, you still can’t find the app, the region of your Apple ID might be the key cause, or there could be temporary app availability issues.

Let me know what you've tried or your Apple ID region, and I can guide you further! Are you okay to try these steps?