Hi there! I see you're having trouble buying tickets on the AMC app because of a purchase failed message. Let’s get this sorted out for you. To start, can you tell me if this happens every time you try to buy tickets or just occasionally? Also, have you tried using a different payment method? Knowing a bit more will help me guide you better.

Meanwhile, here’s a simple step-by-step to check:

1. Check your app version: Make sure your AMC app is updated to the latest version. Sometimes older versions might have bugs affecting purchases.
2. Verify payment info: Double-check that your payment details are correct and your card or payment method has no issues.
3. Restart the app: Close the AMC app completely on your iPhone and reopen it.
4. Try a different network: Switch from Wi-Fi to cellular data or vice versa to rule out connectivity glitches.
5. Clear app cache: On iPhone, if the app allows, you can try reinstalling it to clear any cached data causing trouble.
6. Try booking via browser: Sometimes using a mobile browser to purchase on the AMC website works as a good workaround, and the tickets usually appear in your app after purchase.

If you’ve already done some of these steps, just let me know which ones so we can try a different angle.

Are you okay to start with these? If not resolved, I can dig deeper or help you reach out to AMC support directly.