Hi there! I understand you're having trouble with a payment through the Umo Mobility app—Face ID scans during payment, the amount shows up as deducted in your bank, but the app doesn't reflect the added balance. That does sound concerning.

To help you best, could you tell me:

1. Are you using Apple Pay or directly entering card details in the Umo app?
2. Have you noticed any specific error messages after payment?
3. Has this happened with multiple transactions or just this one?

Meanwhile, here are some steps you can try:

1. Check Internet Connection: Make sure you have a stable internet connection while making the payment. Sometimes delays can prevent the app from updating immediately.

2. Refresh the App Balance: Try logging out of the Umo app and logging back in, or close and reopen the app to refresh the balance display.

3. Verify Payment Method Details: Double-check your card info or Apple Pay setup in the app settings to confirm everything is correct.

4. Update App: Ensure your Umo app is updated to the latest version compatible with iOS 17.6.1.

5. Force Sync / Clear Cache (if possible on iPhone): While iOS doesn't offer explicit cache clearing, force closing the app and restarting your phone can help sync data.

If after these steps your balance still hasn't updated but the bank has processed the payment, it may be an issue with transaction processing on the backend or a temporary sync problem. In that case, sometimes the funds take a little time to reflect. If it persists beyond a few hours, we can investigate further.

Please let me know what you observe after these checks, and we can dive deeper or escalate as needed!