Hi there! I see you're having trouble putting payment options into the U-Haul app on your iPhone with iOS 18.6. Let's get to the bottom of this so you can complete your rental smoothly.

To start, can you tell me a bit more about the issue? For example:

- Are you unable to add any payment method at all, or is the app rejecting certain cards or payment types?
- Is the app showing any error messages when you try to input payment info?
- Have you updated the U-Haul app to the latest version recently?
- Have you tried restarting the app or your phone?

Meanwhile, here’s a step-by-step to troubleshoot common payment input issues on the U-Haul app:

1. Update the App
Go to the App Store and check if the U-Haul app is up to date. Payment features often require the newest version.

2. Restart the App
Completely close the U-Haul app (swipe it away) and reopen it to refresh any temporary glitches.

3. Restart Your iPhone
Power off your phone and turn it back on. Sometimes a restart clears minor system hiccups.

4. Check Payment Info Format
Ensure card numbers, expiration date, CVV, and billing address are entered correctly—small typos can cause rejection.

5. Try a Different Payment Method
If your Visa debit or credit card isn’t accepted, try another credit card, Apple Pay, or PayPal if the app supports them.

6. Check Network Connection
Make sure you have a stable internet connection, preferably Wi-Fi or a strong cellular signal.

7. Reinstall the App
If nothing works, delete the app and reinstall it from the App Store. This clears the cache and resets app settings which might help8.

If after these steps you still face trouble, your card might have restrictions, or there could be a temporary issue on U-Haul’s payment processing side. In that case, contacting U-Haul customer service directly through their support page or 24/7 chat might be best for account-specific help1.

Let me know what you find after these steps, and we'll take it from there!

Are you satisfied with this approach so far?