Hi there! I understand you’re trying to update your credit card payment in the Newsmax app on your iPhone, but when you tap "update payment," it doesn’t respond. Let’s see if we can get that fixed for you.

First, can I ask if you are getting any error messages when you click on "update payment," or does the button just not work at all? Also, have you tried these basic steps already?
- Restarting your iPhone.
- Making sure the app is updated to the latest version.
- Checking your internet connection to be sure it's stable.

If you haven't tried these yet, let's start there because sometimes the app can freeze or glitch temporarily.

If none of that helps, here’s a step-by-step plan tailored for iOS 18.7.1:

1. Clear the app cache or data (this often solves frozen buttons):
- Since iOS doesn’t have a direct “clear cache” option like Android, try uninstalling the Newsmax app and reinstalling it fresh from the App Store.

2. Update your payment information through the website:
- Open Safari on your iPhone and go to the Newsmax Plus account login page.
- Sign into your account.
- Navigate to "Your Payments" in the left navigation menu.
- Select “Edit Payment Info” or “Add Payment” to update your credit card details.
This method sometimes works better if the app itself is glitching2.

3. Check for app permissions:
- Go to Settings > Newsmax on your iPhone.
- Ensure the app has all necessary permissions (like internet access).

4. Try using another payment method temporarily if available, to see if the app accepts it.

If after doing all this, the update still doesn’t work in the app, there may be a temporary issue on the backend or a bug affecting iOS users specifically.

In that case, the fastest next step would be to contact Newsmax customer service directly at 1 (800) 485-4350. They can manually assist you or note any ongoing issues with payment updates on the app7.

Would you like me to guide you through any of these steps in detail? Or have you already tried some that I mentioned?