To resolve the issue of your Fahlo Animal Tracker code being rejected, follow these steps:

1. Verify Your Code: Ensure you are entering the correct tracking code. Double-check for any typographical errors or incorrect characters.

2. Check for Updates: Make sure you have the latest version of the Fahlo app installed. Sometimes, older versions may lead to issues with code acceptance. You can find update options in your device's app store.

3. Reboot Your Device: Restart your phone or tablet to refresh the system. This can sometimes fix minor glitches causing the app to misbehave.

4. Internet Connection: Ensure that you have a stable internet connection. A poor connection may prevent the app from processing the code correctly.

5. Clear Cache: Clear the cache for the Fahlo app. This helps in removing any temporary files that might be causing issues. On Android, go to Settings > Apps > Fahlo > Storage > Clear Cache. On iOS, simply uninstall and reinstall the app for similar results.

6. Contact Customer Support: If the code continues to be rejected, reach out to Fahlo customer support for assistance. They can help clarify if there's a specific issue with your code or account. You can find support contact information on their official website or through the app.

7. Community Resources: Often, other users may have faced similar issues. Check forums or social media groups related to Fahlo, such as the Fahlo App Update Problem on Reddit where you might find solutions shared by others - [learn more].

By following these steps, you should be able to resolve the issue with your Fahlo Animal Tracker code. If problems persist after trying all the above, consider checking for any known outages or bugs reported by the Fahlo community.