If you're unable to open an account on the KFC Iceland app, try the following troubleshooting steps to resolve the issue:

1. Check Internet Connection
- Ensure you have a stable and strong internet connection, either through Wi-Fi or mobile data. A weak connection can prevent the app from loading or creating an account1.

2. Update the App
- Go to the App Store (iOS) or Google Play Store (Android) and check if an update is available for the KFC app. Installing the latest version can resolve bugs and compatibility issues12.

3. Restart Your Device
- Restart your smartphone or tablet. Sometimes, simply rebooting the device can fix app glitches or issues after software updates1.

4. Clear App Cache and Data
- Android: Go to your device Settings → Apps → KFC app → Storage → Clear Cache/Clear Data. This removes temporary files that may cause login or account creation errors1.
- iOS: Offload the app by going to Settings → General → iPhone Storage → KFC app → Offload App. Then reinstall it. This refreshes the app and removes cached files2.

5. Check for Device Software Updates
- Make sure your phone's operating system is up to date. App functionality can break on outdated systems2.

6. Confirm Regional Availability
- The KFC app may have regional restrictions. If the app is not officially supported in Iceland or your region settings are incorrect, account creation might fail. Check the app listing or KFC Iceland's website for confirmation1.

7. Reinstall the App
- Delete and reinstall the app to ensure a clean installation, which can resolve corrupted files or incomplete setups12.

8. Server Issues
- Sometimes KFC's servers or the app's backend systems may be down. Wait briefly and try again later if you've tried all other steps without success1.

If none of these steps work, it may be a regional limitation or a temporary server-side issue. In that case, consider using alternative platforms like Wolt, which lists KFC as a restaurant and is available in many European countries including Iceland5.

If the problem persists, contact KFC Iceland customer support directly for specific assistance.