I licensed both a mac and windows PC and have used them with success for several weeks. The mac being in server mode and the windows PC as a client. I later decided that I'd like to have a second mac as a client and just after getting it connected, noticed that I was seeing the trial mode behavior with some keys not being transmitted and copy/paste only partial. When I accessed the help > license manager window I see it describes my product key as not being activated. It might be worth mentioning that the Mac acting as a server is running on macOS Mojave and that the normally autostarted "acrossd" isn't active when running with that operating system unless I manually run "sudo /usr/local/sbin/acrossd" within a terminal window.