Hello! I understand you're encountering an issue with your account where it's showing "System failure, card validation failed" even when you enter the correct account numbers. Let's work through this together.

To start, can you let me know if this happens consistently with all your account numbers or just a particular one? Also, have you tried any specific troubleshooting steps so far, like checking if your card is activated or trying a different device or browser?

These details will help me better assist you!

This just started happening on my phone.

Thank you for clarifying that this issue started happening on your phone. Let's go through some steps that might help resolve the "System failure, card validation failed" message you're seeing. Here are a few things you can try:

1. Clear Cache and Data for the App:
- Go to your phone's Settings.
- Tap on 'Apps' or 'Application Manager'.
- Scroll down to find the OTC Network app and tap on it.
- Select 'Storage', then tap on 'Clear Cache' and 'Clear Data'.
- Restart the app and try entering your account numbers again.

2. Check Your Internet Connection:
- Make sure you have a stable internet connection, as a weak connection can lead to validation issues. Consider switching between Wi-Fi and mobile data to see if there's a difference.

3. Update the App:
- Ensure that the OTC Network app is updated to the latest version. Visit the Google Play Store or App Store, search for the app, and check if there’s an update available.

4. Reinstall the App:
- If clearing the cache and data doesn’t work, try uninstalling the app completely and then reinstalling it from the app store.

5. Verify Your Card:
- Please double-check that your card is active. You might need to call the customer service number listed on the back of your card to ensure everything is in order.

If you've already tried any of these steps, please let me know which ones, and we can look into other solutions! Are you comfortable trying these steps?