We have the same problem. Subscription to Hamanchi with around 30 connected computers W7/8/10. Suddenly (2-3 weeks ago) 8 of our 12 Windows 10 computers show yellow triangles on hamanchi computers. I have uninstalled all software and services and re-installed from fresh and all is fine until the computers are re-booted then the triangles appear again. I wish Hamanchi were a bit more helpfull. BTW switching the services back on sometimes works but we have to remote into our user base of laptops individually, some reconnect and some don't but it is all undone when they start up again for work the next day.
We have had 3 years of a good product followed by 12 months of grief. This is the last straw of a series of issues with Hamanchi. We have set up a 2008 SBS with VPN and ddns just to overcome this problem.