A. 1. Check your internet connection to ensure it is stable. A weak connection can cause transaction errors. 2. Verify that your payment method is valid and has sufficient funds. 3. Try using a different payment method if available. 4. Clear the app cache by going to Settings > Apps > JoyArk Cloud Gaming > Storage > Clear Cache. 5. Restart the app and attempt the transaction again.
B. If the issue persists, consider uninstalling and reinstalling the app to ensure you have the latest version, which may resolve any underlying bugs.