A. 1. Restart your iPhone to refresh the system. 2. Go to Settings > Bluetooth and ensure Bluetooth is turned on. 3. Open the Paperang app and try reconnecting to the printer. 4. If it still fails, uninstall the app and reinstall it from the App Store. 5. After reinstalling, try connecting again.

B. 1. Check for any available updates for the Paperang app in the App Store. 2. If an update is available, install it and then attempt to connect to the printer again.