To workaround to resolve the not being able to connect isues or the not being able to install maps on your PC.
Goto https://garmin-express.en.uptodown.com/windows/versions
download 7.4.1.0, Un-install the current 7.6.0.0 or the Release that has been reactivated 7.5.0.0.
Reboot PC Install 7.4.1.0 and revoke the update request when Garmin Express starts, add your device, and do your thing!
Tested and proven to work on a DriveSmart 61