Hi there! I understand you're having trouble with the Hungry Howies app not accepting any of your credit cards, even though you've used them in the past. Let's see if we can get this sorted.

First, could you let me know if you've tried these basic checks already?
- Restarting the app or your device.
- Making sure the app is updated to the latest version.
- Removing and re-adding your card information.

If you’ve done those, no problem—we can dig deeper. Sometimes payment issues on the app can be related to:
1. Temporary server or payment gateway problems on Hungry Howies’ side.
2. Network connectivity issues on your device.
3. Issues with the specific card or bank holding the transaction.

Here’s what I suggest trying step-by-step:

1. Verify Internet Connection: Make sure you are connected to a stable Wi-Fi or data network.
2. Clear App Cache (since you're on Windows, if you are using the app from a browser, clear your browser cache and cookies): For WebKit browsers, go to Settings > Privacy and clear cache and cookies, then restart the browser.
3. Try a Different Payment Method: If you have another card, try adding it fresh. Sometimes banks decline transactions due to security flags.
4. Check Card Details: Double-check expiration dates, CVV, and billing address match what’s on file with your bank.
5. Update the App or Browser: Make sure you’re running the latest version of the Hungry Howies app or using an updated browser version on Windows 10.
6. Log out and back in to your account: This refreshes your session and can sometimes resolve glitches.

If the problem persists after these, it might be an issue from Hungry Howies' payment processing system itself. Some users have reported similar issues where the app temporarily won’t accept cards, possibly related to backend updates or outages1.

Would you mind sharing what error message or behavior you see exactly when you try to use the cards? That can help me narrow down the cause and guide you better.