This behavior is normal for MediaTek Preloader modes. The MTK bootloader opens a port for only a few seconds waiting for a command from tools like SP Flash Tool before entering regular charging mode.

Running 32-bit installer on 64-bit unsupported mode. Fix: Right-click installer → Properties → Compatibility → Run in compatibility mode for Windows 8.

If you have older, conflicting Qualcomm or MTK drivers installed, uninstall them completely via the Windows Control Panel before installing version 2.0.1.1.