I hope 20 minutes is not too long for you to wait for support
Yes, that sounds really annoying. Switching hardware results in an invalid license since the license is based on the hardware. Upgrading to a newer version should not have this effect, but some other users have also mentioned this problem. The last user was running NCS in service mode. Stop the service and start NCS X again. NCS contacts the license server and with that it was solved. Maybe you need to click on the licensing key again. If you have a 4 license key this seems to be solved by doing a clean installation of NCS. Uninstall and install again if that solves the problem. If not, uninstall and also remove what is left in Program Files and in ProgramData-Moonware. Install NCS again.
Obviously we need to check this. What OS are you using?