Como desinstalá-lo?

Open Windows Settings → Apps, find GolinksPRO Download Manager and choose Uninstall. The uninstaller asks whether to delete your download list and settings as well. Files you downloaded are never touched. For the portable copy, delete its folder. On Linux, remove the package with your package manager, or delete the AppImage; Uninstall on Linux says what stays in your home folder and how to remove it.