If the Burger King app freezes on the splash screen or closes immediately, start with the basics: force-close it, clear the cache in your phone settings, and reopen. On Android go to Settings → Apps → Burger King → Storage → Clear Cache. On iOS, delete and reinstall the app from the App Store. Make sure your OS version meets the app's requirements — outdated firmware is a common culprit.
Payment failures at checkout usually come down to three things: the card details saved in your profile are outdated, the bank is declining the transaction, or there's a temporary glitch on the payment gateway side. Try removing the saved card and re-entering it manually. If the error persists, use a different payment method — Google Pay or Apple Pay tend to work more reliably when cards fail.
Sometimes a valid promo code just doesn't register. Check that:
If everything checks out but the discount still won't apply, log out and back in — this refreshes the session and often fixes it.
Login issues are usually caused by a cached session conflict. Clear the app data or browser cookies, then try signing in again. If you've forgotten your password, use the reset link — the email arrives within a few minutes. No email? Check your spam folder and make sure the address matches what you registered with.
If the app feels sluggy — menus take forever to load, the map won't show nearby locations — the problem is almost always a weak connection. Switch from Wi-Fi to mobile data or vice versa to see if that helps. High ping on a shared network (like public Wi-Fi) makes the app nearly unusable, so a stable LTE connection is the better bet.
Missed offers because notifications stopped coming? Check that notifications are enabled for the app in your phone's system settings. On iOS, go to Settings → Notifications → Burger King. On Android, Settings → Apps → Notifications. Also make sure Battery Saver mode isn't blocking background activity.