A. If the app crashes after making a payment, try clearing the app's cache. Go to your device's settings, select 'Apps', find Joymeet, and tap 'Storage'. From there, select 'Clear Cache'. This can help resolve temporary issues that may cause crashes.

B. Ensure that your app is updated to the latest version. Go to the Google Play Store, search for Joymeet, and check for any available updates. Keeping the app updated can fix bugs that lead to crashes.