If gINT crashes, or a pc loses network connection perhaps due to a vpn drop out, then a Datgel network license connection would not be closed. This may result in unavailability of your Datgel licenses.
The manual way to fix this is to login to the license server computer, launch the Uni Key License Server program by double clicking on it from the System Tray. Then click the Kill All button.
Alternatively, if this is a common problem you may like to set up a scheduled task to run each day on the License Server computer. Make a *.bat file with this text:
net stop "NetUniKeyServer"
net start "NetUniKeyServer"
The bat file needs to be run with Admin rights. Use windows scheduler to run it automatically each day.