When I download Version 1.0.0.181 it tells me I need to install an update for it to work, It updates to a later version of the Openground Launcher and then will not work - I get No Connections - we do not have different email domains.
We resolved this issue via an SR, however if other users have this issue they need to work through this troubleshooter:
https://communities.bentley.com/products/geotechnical1/w/openground-wiki/53870/launcher-faq-s-and-troubleshooting