If you're encountering issues with the Raising Cane's Chicken Fingers app not accepting any payments, follow these steps to troubleshoot and potentially resolve the problem:

1. Check for App Updates:
- Ensure that the Raising Cane's app is updated to the latest version, as updates often include bug fixes and improvements. Go to the App Store, search for Raising Cane's, and check if there’s an update available.

2. Verify Payment Method:
- Check that your payment method is valid and has sufficient funds. Ensure that the card or payment service you are using is accepted by the app. If possible, try a different payment method to see if that resolves the issue.

3. Clear App Cache:
- Sometimes, clearing the app cache can resolve unexpected issues. You can do this by uninstalling the app and then reinstalling it. This process removes temporary data that may be causing problems.

4. Network Connection:
- Make sure you have a stable internet connection. Try switching from Wi-Fi to cellular data or vice versa. If you're on a public network, consider switching to a private network for more reliable performance.

5. Restart Your Device:
- Restart your iPhone to refresh its system. This can resolve many temporary issues related to app performance.

6. Contact Customer Support:
- If none of the above steps work, you may need direct assistance from Raising Cane's support. Visit their Contact Us page and follow the instructions to get in touch with their customer relations team for help.

7. Alternative Ordering Methods:
- If the app continues to malfunction, consider using a different method to place your order, such as calling the restaurant directly or using a delivery service like UberEats if available.

8. Community Insights:
- There are discussions on platforms like Reddit where users share similar experiences with payment issues on the app. You can check these for additional troubleshooting tips or to see if others are experiencing similar problems. For instance, you may find useful information in these threads: pay card issues - [learn more] or ordering tips - [learn more].

By following these steps, you should be able to resolve the payment issue you are facing with the Raising Cane's Chicken Fingers app. If problems persist, customer support will be your best resource for further assistance.